diff --git a/application/controllers/HostController.php b/application/controllers/HostController.php
index 259dd33f0..255ea87ac 100644
--- a/application/controllers/HostController.php
+++ b/application/controllers/HostController.php
@@ -8,26 +8,38 @@
 use Icinga\Exception\NotFoundError;
 use Icinga\Module\Icingadb\Command\Object\GetObjectCommand;
 use Icinga\Module\Icingadb\Command\Transport\CommandTransport;
+use Icinga\Module\Icingadb\Common\Backend;
 use Icinga\Module\Icingadb\Common\CommandActions;
 use Icinga\Module\Icingadb\Common\HostLinks;
 use Icinga\Module\Icingadb\Common\Links;
 use Icinga\Module\Icingadb\Hook\TabHook\HookActions;
+use Icinga\Module\Icingadb\Model\DependencyEdge;
+use Icinga\Module\Icingadb\Model\DependencyNode;
 use Icinga\Module\Icingadb\Model\History;
 use Icinga\Module\Icingadb\Model\Host;
 use Icinga\Module\Icingadb\Model\Service;
 use Icinga\Module\Icingadb\Model\ServicestateSummary;
 use Icinga\Module\Icingadb\Redis\VolatileStateResults;
+use Icinga\Module\Icingadb\Web\Control\SearchBar\ObjectSuggestions;
+use Icinga\Module\Icingadb\Web\Control\ViewModeSwitcher;
 use Icinga\Module\Icingadb\Web\Controller;
 use Icinga\Module\Icingadb\Widget\Detail\HostDetail;
 use Icinga\Module\Icingadb\Widget\Detail\HostInspectionDetail;
 use Icinga\Module\Icingadb\Widget\Detail\HostMetaInfo;
 use Icinga\Module\Icingadb\Widget\Detail\QuickActions;
+use Icinga\Module\Icingadb\Widget\ItemList\DependencyNodeList;
 use Icinga\Module\Icingadb\Widget\ItemList\HostList;
 use Icinga\Module\Icingadb\Widget\ItemList\HistoryList;
 use Icinga\Module\Icingadb\Widget\ItemList\ServiceList;
+use ipl\Orm\Query;
+use ipl\Sql\Expression;
+use ipl\Sql\Filter\Exists;
 use ipl\Stdlib\Filter;
+use ipl\Web\Control\LimitControl;
+use ipl\Web\Control\SortControl;
 use ipl\Web\Url;
 use ipl\Web\Widget\Tabs;
+use Generator;
 
 class HostController extends Controller
 {
@@ -37,9 +49,9 @@ class HostController extends Controller
     /** @var Host The host object */
     protected $host;
 
-    public function init()
+    public function init(): void
     {
-        $name = $this->params->getRequired('name');
+        $name = $this->params->shiftRequired('name');
 
         $query = Host::on($this->getDb())->with(['state', 'icon_image', 'timeperiod']);
         $query
@@ -51,17 +63,22 @@ public function init()
         /** @var Host $host */
         $host = $query->first();
         if ($host === null) {
-            throw new NotFoundError(t('Host not found'));
+            throw new NotFoundError($this->translate('Host not found'));
         }
 
         $this->host = $host;
         $this->loadTabsForObject($host);
 
+        $this->addControl((new HostList([$host]))
+            ->setViewMode('objectHeader')
+            ->setDetailActionsDisabled()
+            ->setNoSubjectLink());
+
         $this->setTitleTab($this->getRequest()->getActionName());
         $this->setTitle($host->display_name);
     }
 
-    public function indexAction()
+    public function indexAction(): void
     {
         $serviceSummary = ServicestateSummary::on($this->getDb());
         $serviceSummary->filter(Filter::equal('service.host_id', $this->host->id));
@@ -72,10 +89,6 @@ public function indexAction()
             $this->controls->addAttributes(['class' => 'overdue']);
         }
 
-        $this->addControl((new HostList([$this->host]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addControl(new HostMetaInfo($this->host));
         $this->addControl(new QuickActions($this->host));
 
@@ -84,7 +97,7 @@ public function indexAction()
         $this->setAutorefreshInterval(10);
     }
 
-    public function sourceAction()
+    public function sourceAction(): void
     {
         $this->assertPermission('icingadb/object/show-source');
 
@@ -97,17 +110,13 @@ public function sourceAction()
             $this->controls->addAttributes(['class' => 'overdue']);
         }
 
-        $this->addControl((new HostList([$this->host]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addContent(new HostInspectionDetail(
             $this->host,
             reset($apiResult)
         ));
     }
 
-    public function historyAction()
+    public function historyAction(): Generator
     {
         $compact = $this->view->compact; // TODO: Find a less-legacy way..
 
@@ -141,7 +150,7 @@ public function historyAction()
         $sortControl = $this->createSortControl(
             $history,
             [
-                'history.event_time desc, history.event_type desc' => t('Event Time')
+                'history.event_time desc, history.event_type desc' => $this->translate('Event Time')
             ]
         );
         $viewModeSwitcher = $this->createViewModeSwitcher($paginationControl, $limitControl, true);
@@ -158,10 +167,6 @@ public function historyAction()
 
         yield $this->export($history);
 
-        $this->addControl((new HostList([$this->host]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addControl($sortControl);
         $this->addControl($limitControl);
         $this->addControl($viewModeSwitcher);
@@ -182,7 +187,7 @@ public function historyAction()
         }
     }
 
-    public function servicesAction()
+    public function servicesAction(): Generator
     {
         if ($this->host->state->is_overdue) {
             $this->controls->addAttributes(['class' => 'overdue']);
@@ -209,10 +214,10 @@ public function servicesAction()
         $sortControl = $this->createSortControl(
             $services,
             [
-                'service.display_name' => t('Name'),
-                'service.state.severity desc,service.state.last_state_change desc' => t('Severity'),
-                'service.state.soft_state' => t('Current State'),
-                'service.state.last_state_change desc' => t('Last State Change')
+                'service.display_name' => $this->translate('Name'),
+                'service.state.severity desc,service.state.last_state_change desc' => $this->translate('Severity'),
+                'service.state.soft_state' => $this->translate('Current State'),
+                'service.state.last_state_change desc' => $this->translate('Last State Change')
             ]
         );
 
@@ -221,10 +226,6 @@ public function servicesAction()
         $serviceList = (new ServiceList($services))
             ->setViewMode($viewModeSwitcher->getViewMode());
 
-        $this->addControl((new HostList([$this->host]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addControl($paginationControl);
         $this->addControl($sortControl);
         $this->addControl($limitControl);
@@ -235,25 +236,252 @@ public function servicesAction()
         $this->setAutorefreshInterval(10);
     }
 
+    public function parentsAction(): Generator
+    {
+        $nodesQuery = $this->fetchNodes(true);
+
+        $limitControl = $this->createLimitControl();
+        $paginationControl = $this->createPaginationControl($nodesQuery);
+
+        $defaultSort = ['severity DESC', 'last_state_change DESC'];
+        $sortControl = $this->createSortControl(
+            $nodesQuery,
+            [
+                'severity desc, last_state_change desc' => $this->translate('Severity'),
+                'name'                                  => $this->translate('Name'),
+                'state'                                 => $this->translate('Current State'),
+                'last_state_change desc'                => $this->translate('Last State Change')
+            ],
+            $defaultSort
+        );
+
+        $viewModeSwitcher = $this->createViewModeSwitcher($paginationControl, $limitControl);
+
+        $searchBar = $this->createSearchBar(
+            $nodesQuery,
+            [
+                $limitControl->getLimitParam(),
+                $sortControl->getSortParam(),
+                $viewModeSwitcher->getViewModeParam(),
+                'name'
+            ]
+        );
+
+        if ($searchBar->hasBeenSent() && ! $searchBar->isValid()) {
+            if ($searchBar->hasBeenSubmitted()) {
+                $filter = $this->getFilter();
+            } else {
+                $this->addControl($searchBar);
+                $this->sendMultipartUpdate();
+
+                return;
+            }
+        } else {
+            $filter = $searchBar->getFilter();
+        }
+
+        $nodesQuery->filter($filter);
+
+        yield $this->export($nodesQuery);
+
+        $this->addControl($paginationControl);
+        $this->addControl($sortControl);
+        $this->addControl($limitControl);
+        $this->addControl($viewModeSwitcher);
+        $this->addControl($searchBar);
+
+        $this->addContent(
+            (new DependencyNodeList($nodesQuery))
+                ->setViewMode($viewModeSwitcher->getViewMode())
+        );
+
+        if (! $searchBar->hasBeenSubmitted() && $searchBar->hasBeenSent()) {
+            $this->sendMultipartUpdate();
+        }
+
+        $this->setAutorefreshInterval(10);
+    }
+
+    public function childrenAction(): Generator
+    {
+        $nodesQuery = $this->fetchNodes();
+
+        $limitControl = $this->createLimitControl();
+        $paginationControl = $this->createPaginationControl($nodesQuery);
+
+        $defaultSort = ['severity DESC', 'last_state_change DESC'];
+        $sortControl = $this->createSortControl(
+            $nodesQuery,
+            [
+                'severity desc, last_state_change desc' => $this->translate('Severity'),
+                'name'                                  => $this->translate('Name'),
+                'state'                                 => $this->translate('Current State'),
+                'last_state_change desc'                => $this->translate('Last State Change')
+            ],
+            $defaultSort
+        );
+
+        $viewModeSwitcher = $this->createViewModeSwitcher($paginationControl, $limitControl);
+
+        $searchBar = $this->createSearchBar(
+            $nodesQuery,
+            [
+                $limitControl->getLimitParam(),
+                $sortControl->getSortParam(),
+                $viewModeSwitcher->getViewModeParam(),
+                'name'
+            ]
+        );
+
+        $searchBar->getSuggestionUrl()->setParam('isChildrenTab');
+        $searchBar->getEditorUrl()->setParam('isChildrenTab');
+
+        if ($searchBar->hasBeenSent() && ! $searchBar->isValid()) {
+            if ($searchBar->hasBeenSubmitted()) {
+                $filter = $this->getFilter();
+            } else {
+                $this->addControl($searchBar);
+                $this->sendMultipartUpdate();
+
+                return;
+            }
+        } else {
+            $filter = $searchBar->getFilter();
+        }
+
+        $nodesQuery->filter($filter);
+
+        yield $this->export($nodesQuery);
+
+        $this->addControl($paginationControl);
+        $this->addControl($sortControl);
+        $this->addControl($limitControl);
+        $this->addControl($viewModeSwitcher);
+        $this->addControl($searchBar);
+
+        $this->addContent(
+            (new DependencyNodeList($nodesQuery))
+                ->setViewMode($viewModeSwitcher->getViewMode())
+        );
+
+        if (! $searchBar->hasBeenSubmitted() && $searchBar->hasBeenSent()) {
+            $this->sendMultipartUpdate();
+        }
+
+        $this->setAutorefreshInterval(10);
+    }
+
+    public function completeAction(): void
+    {
+        $isChildrenTab = $this->params->shift('isChildrenTab');
+        $relation = $isChildrenTab ? 'parent' : 'child';
+
+        $suggestions = (new ObjectSuggestions())
+            ->setModel(DependencyNode::class)
+            ->setBaseFilter(Filter::equal("$relation.host.id", $this->host->id))
+            ->forRequest($this->getServerRequest());
+
+        $this->getDocument()->add($suggestions);
+    }
+
+    public function searchEditorAction(): void
+    {
+        $isChildrenTab = $this->params->shift('isChildrenTab');
+        $redirectUrl = $isChildrenTab
+            ? Url::fromPath('icingadb/host/children', ['name' => $this->host->name])
+            : Url::fromPath('icingadb/host/parents', ['name' => $this->host->name]);
+
+        $editor = $this->createSearchEditor(
+            DependencyNode::on($this->getDb()),
+            $redirectUrl,
+            [
+                LimitControl::DEFAULT_LIMIT_PARAM,
+                SortControl::DEFAULT_SORT_PARAM,
+                ViewModeSwitcher::DEFAULT_VIEW_MODE_PARAM,
+                'name'
+            ]
+        );
+
+        if ($isChildrenTab) {
+            $editor->getSuggestionUrl()->setParam('isChildrenTab');
+        }
+
+        $this->getDocument()->add($editor);
+        $this->setTitle($this->translate('Adjust Filter'));
+    }
+
+    /**
+     * Fetch the nodes for the current host
+     *
+     * @param bool $fetchParents Whether to fetch the parents or the children
+     *
+     * @return Query
+     */
+    protected function fetchNodes(bool $fetchParents = false): Query
+    {
+        $query = DependencyNode::on($this->getDb())
+            ->with([
+                'host',
+                'host.state',
+                'host.state.last_comment',
+                'service',
+                'service.state',
+                'service.state.last_comment',
+                'service.host',
+                'service.host.state',
+                'redundancy_group',
+                'redundancy_group.state'
+            ])
+            ->setResultSetClass(VolatileStateResults::class);
+
+        $this->joinFix($query, $this->host->id, $fetchParents);
+
+        $this->applyRestrictions($query);
+
+        return $query;
+    }
+
     protected function createTabs(): Tabs
     {
+        if (Backend::getDbSchemaVersion() < 6) {
+            $hasDependencyNode = false;
+        } else {
+            $hasDependencyNode = DependencyNode::on($this->getDb())
+                    ->columns([new Expression('1')])
+                    ->filter(Filter::all(
+                        Filter::equal('host_id', $this->host->id),
+                        Filter::unlike('service_id', '*')
+                    ))
+                    ->first() !== null;
+        }
+
         $tabs = $this->getTabs()
             ->add('index', [
-                'label'  => t('Host'),
+                'label'  => $this->translate('Host'),
                 'url'    => Links::host($this->host)
             ])
             ->add('services', [
-                'label'  => t('Services'),
+                'label'  => $this->translate('Services'),
                 'url'    => HostLinks::services($this->host)
             ])
             ->add('history', [
-                'label'  => t('History'),
-                'url'    => HostLinks::history($this->host)
+                'label' => $this->translate('History'),
+                'url' => HostLinks::history($this->host)
+            ]);
+
+        if ($hasDependencyNode) {
+            $tabs->add('parents', [
+                'label' => $this->translate('Parents'),
+                'url'   => Url::fromPath('icingadb/host/parents', ['name' => $this->host->name])
+            ])->add('children', [
+                'label' => $this->translate('Children'),
+                'url'   => Url::fromPath('icingadb/host/children', ['name' => $this->host->name])
             ]);
+        }
 
         if ($this->hasPermission('icingadb/object/show-source')) {
             $tabs->add('source', [
-                'label' => t('Source'),
+                'label' => $this->translate('Source'),
                 'url' => Links::hostSource($this->host)
             ]);
         }
@@ -265,14 +493,12 @@ protected function createTabs(): Tabs
         return $tabs;
     }
 
-    protected function setTitleTab(string $name)
+    protected function setTitleTab(string $name): void
     {
         $tab = $this->createTabs()->get($name);
 
         if ($tab !== null) {
-            $tab->setActive();
-
-            $this->setTitle($tab->getLabel());
+            $this->getTabs()->activate($name);
         }
     }
 
@@ -290,4 +516,42 @@ protected function getDefaultTabControls(): array
     {
         return [(new HostList([$this->host]))->setDetailActionsDisabled()->setNoSubjectLink()];
     }
+
+    /**
+     * Filter the query to only include (direct) parents or children of the given object.
+     *
+     * @todo This is a workaround, remove it once https://github.com/Icinga/ipl-orm/issues/76 is fixed
+     *
+     * @param Query $query
+     * @param string $objectId
+     * @param bool $fetchParents Fetch parents if true, children otherwise
+     */
+    protected function joinFix(Query $query, string $objectId, bool $fetchParents = false): void
+    {
+        $filterTable = $fetchParents ? 'child' : 'parent';
+        $utilizeType = $fetchParents ? 'parent' : 'child';
+
+        $edge = DependencyEdge::on($this->getDb())
+            ->utilize($utilizeType)
+            ->columns([new Expression('1')])
+            ->filter(Filter::equal("$filterTable.host.id", $objectId))
+            ->filter(Filter::unlike("$filterTable.service.id", '*'));
+
+        $edge->getFilter()->metaData()->set('forceOptimization', false);
+
+        $resolver = $edge->getResolver();
+
+        $edgeAlias = $resolver->getAlias(
+            $resolver->resolveRelation($resolver->qualifyPath($utilizeType, $edge->getModel()->getTableName()))
+                ->getTarget()
+        );
+
+        $query->filter(new Exists(
+            $edge->assembleSelect()
+                ->where(
+                    "$edgeAlias.id = "
+                    . $query->getResolver()->qualifyColumn('id', $query->getModel()->getTableName())
+                )
+        ));
+    }
 }
diff --git a/application/controllers/ServiceController.php b/application/controllers/ServiceController.php
index 25f56b729..835562e2c 100644
--- a/application/controllers/ServiceController.php
+++ b/application/controllers/ServiceController.php
@@ -13,18 +13,28 @@
 use Icinga\Module\Icingadb\Common\Links;
 use Icinga\Module\Icingadb\Common\ServiceLinks;
 use Icinga\Module\Icingadb\Hook\TabHook\HookActions;
+use Icinga\Module\Icingadb\Model\DependencyNode;
 use Icinga\Module\Icingadb\Model\History;
 use Icinga\Module\Icingadb\Model\Service;
 use Icinga\Module\Icingadb\Redis\VolatileStateResults;
+use Icinga\Module\Icingadb\Web\Control\SearchBar\ObjectSuggestions;
+use Icinga\Module\Icingadb\Web\Control\ViewModeSwitcher;
 use Icinga\Module\Icingadb\Web\Controller;
 use Icinga\Module\Icingadb\Widget\Detail\QuickActions;
 use Icinga\Module\Icingadb\Widget\Detail\ServiceDetail;
 use Icinga\Module\Icingadb\Widget\Detail\ServiceInspectionDetail;
 use Icinga\Module\Icingadb\Widget\Detail\ServiceMetaInfo;
+use Icinga\Module\Icingadb\Widget\ItemList\DependencyNodeList;
 use Icinga\Module\Icingadb\Widget\ItemList\HistoryList;
 use Icinga\Module\Icingadb\Widget\ItemList\ServiceList;
+use ipl\Orm\Query;
+use ipl\Sql\Expression;
 use ipl\Stdlib\Filter;
+use ipl\Web\Control\LimitControl;
+use ipl\Web\Control\SortControl;
 use ipl\Web\Url;
+use ipl\Web\Widget\Tabs;
+use Generator;
 
 class ServiceController extends Controller
 {
@@ -34,10 +44,10 @@ class ServiceController extends Controller
     /** @var Service The service object */
     protected $service;
 
-    public function init()
+    public function init(): void
     {
-        $name = $this->params->getRequired('name');
-        $hostName = $this->params->getRequired('host.name');
+        $name = $this->params->shiftRequired('name');
+        $hostName = $this->params->shiftRequired('host.name');
 
         $query = Service::on($this->getDb())
             ->with([
@@ -63,30 +73,31 @@ public function init()
         /** @var Service $service */
         $service = $query->first();
         if ($service === null) {
-            throw new NotFoundError(t('Service not found'));
+            throw new NotFoundError($this->translate('Service not found'));
         }
 
         $this->service = $service;
         $this->loadTabsForObject($service);
 
+        $this->addControl((new ServiceList([$service]))
+            ->setViewMode('objectHeader')
+            ->setDetailActionsDisabled()
+            ->setNoSubjectLink());
+
         $this->setTitleTab($this->getRequest()->getActionName());
         $this->setTitle(
-            t('%s on %s', '<service> on <host>'),
+            $this->translate('%s on %s', '<service> on <host>'),
             $service->display_name,
             $service->host->display_name
         );
     }
 
-    public function indexAction()
+    public function indexAction(): void
     {
         if ($this->service->state->is_overdue) {
             $this->controls->addAttributes(['class' => 'overdue']);
         }
 
-        $this->addControl((new ServiceList([$this->service]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addControl(new ServiceMetaInfo($this->service));
         $this->addControl(new QuickActions($this->service));
 
@@ -95,7 +106,144 @@ public function indexAction()
         $this->setAutorefreshInterval(10);
     }
 
-    public function sourceAction()
+    public function parentsAction(): Generator
+    {
+        $nodesQuery = $this->fetchNodes(true);
+
+        $limitControl = $this->createLimitControl();
+        $paginationControl = $this->createPaginationControl($nodesQuery);
+
+        $defaultSort = ['severity DESC', 'last_state_change DESC'];
+        $sortControl = $this->createSortControl(
+            $nodesQuery,
+            [
+                'severity desc, last_state_change desc' => $this->translate('Severity'),
+                'name'                                  => $this->translate('Name'),
+                'state'                                 => $this->translate('Current State'),
+                'last_state_change desc'                => $this->translate('Last State Change')
+            ],
+            $defaultSort
+        );
+
+        $viewModeSwitcher = $this->createViewModeSwitcher($paginationControl, $limitControl);
+
+        $searchBar = $this->createSearchBar(
+            $nodesQuery,
+            [
+                $limitControl->getLimitParam(),
+                $sortControl->getSortParam(),
+                $viewModeSwitcher->getViewModeParam(),
+                'name',
+                'host.name'
+            ]
+        );
+
+        if ($searchBar->hasBeenSent() && ! $searchBar->isValid()) {
+            if ($searchBar->hasBeenSubmitted()) {
+                $filter = $this->getFilter();
+            } else {
+                $this->addControl($searchBar);
+                $this->sendMultipartUpdate();
+
+                return;
+            }
+        } else {
+            $filter = $searchBar->getFilter();
+        }
+
+        $nodesQuery->filter($filter);
+
+        yield $this->export($nodesQuery);
+
+        $this->addControl($paginationControl);
+        $this->addControl($sortControl);
+        $this->addControl($limitControl);
+        $this->addControl($viewModeSwitcher);
+        $this->addControl($searchBar);
+
+        $this->addContent(
+            (new DependencyNodeList($nodesQuery))
+                ->setViewMode($viewModeSwitcher->getViewMode())
+        );
+
+        if (! $searchBar->hasBeenSubmitted() && $searchBar->hasBeenSent()) {
+            $this->sendMultipartUpdate();
+        }
+
+        $this->setAutorefreshInterval(10);
+    }
+
+    public function childrenAction(): Generator
+    {
+        $nodesQuery = $this->fetchNodes();
+
+        $limitControl = $this->createLimitControl();
+        $paginationControl = $this->createPaginationControl($nodesQuery);
+
+        $defaultSort = ['severity DESC', 'last_state_change DESC'];
+        $sortControl = $this->createSortControl(
+            $nodesQuery,
+            [
+                'severity desc, last_state_change desc' => $this->translate('Severity'),
+                'name'                                  => $this->translate('Name'),
+                'state'                                 => $this->translate('Current State'),
+                'last_state_change desc'                => $this->translate('Last State Change')
+            ],
+            $defaultSort
+        );
+
+        $viewModeSwitcher = $this->createViewModeSwitcher($paginationControl, $limitControl);
+
+        $searchBar = $this->createSearchBar(
+            $nodesQuery,
+            [
+                $limitControl->getLimitParam(),
+                $sortControl->getSortParam(),
+                $viewModeSwitcher->getViewModeParam(),
+                'name',
+                'host.name'
+            ]
+        );
+
+        $searchBar->getSuggestionUrl()->setParam('isChildrenTab');
+        $searchBar->getEditorUrl()->setParam('isChildrenTab');
+
+        if ($searchBar->hasBeenSent() && ! $searchBar->isValid()) {
+            if ($searchBar->hasBeenSubmitted()) {
+                $filter = $this->getFilter();
+            } else {
+                $this->addControl($searchBar);
+                $this->sendMultipartUpdate();
+
+                return;
+            }
+        } else {
+            $filter = $searchBar->getFilter();
+        }
+
+        $nodesQuery->filter($filter);
+
+        yield $this->export($nodesQuery);
+
+        $this->addControl($paginationControl);
+        $this->addControl($sortControl);
+        $this->addControl($limitControl);
+        $this->addControl($viewModeSwitcher);
+        $this->addControl($searchBar);
+
+        $this->addContent(
+            (new DependencyNodeList($nodesQuery))
+                ->setViewMode($viewModeSwitcher->getViewMode())
+        );
+
+        if (! $searchBar->hasBeenSubmitted() && $searchBar->hasBeenSent()) {
+            $this->sendMultipartUpdate();
+        }
+
+        $this->setAutorefreshInterval(10);
+    }
+
+    public function sourceAction(): void
     {
         $this->assertPermission('icingadb/object/show-source');
 
@@ -108,17 +256,13 @@ public function sourceAction()
             $this->controls->addAttributes(['class' => 'overdue']);
         }
 
-        $this->addControl((new ServiceList([$this->service]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addContent(new ServiceInspectionDetail(
             $this->service,
             reset($apiResult)
         ));
     }
 
-    public function historyAction()
+    public function historyAction(): Generator
     {
         $compact = $this->view->compact; // TODO: Find a less-legacy way..
 
@@ -153,7 +297,7 @@ public function historyAction()
         $sortControl = $this->createSortControl(
             $history,
             [
-                'history.event_time desc, history.event_type desc' => t('Event Time')
+                'history.event_time desc, history.event_type desc' => $this->translate('Event Time')
             ]
         );
         $viewModeSwitcher = $this->createViewModeSwitcher($paginationControl, $limitControl, true);
@@ -170,10 +314,6 @@ public function historyAction()
 
         yield $this->export($history);
 
-        $this->addControl((new ServiceList([$this->service]))
-            ->setViewMode('objectHeader')
-            ->setDetailActionsDisabled()
-            ->setNoSubjectLink());
         $this->addControl($sortControl);
         $this->addControl($limitControl);
         $this->addControl($viewModeSwitcher);
@@ -194,21 +334,128 @@ public function historyAction()
         }
     }
 
-    protected function createTabs()
+    public function completeAction(): void
+    {
+        $isChildrenTab = $this->params->shift('isChildrenTab');
+        $relation = $isChildrenTab ? 'parent' : 'child';
+
+        $suggestions = (new ObjectSuggestions())
+            ->setModel(DependencyNode::class)
+            ->setBaseFilter(Filter::equal("$relation.service.id", $this->service->id))
+            ->forRequest($this->getServerRequest());
+
+        $this->getDocument()->add($suggestions);
+    }
+
+    public function searchEditorAction(): void
+    {
+        $isChildrenTab = $this->params->shift('isChildrenTab');
+        $redirectUrl = $isChildrenTab
+            ? Url::fromPath(
+                'icingadb/service/children',
+                ['name' => $this->service->name, 'host.name' => $this->service->host->name]
+            )
+            : Url::fromPath(
+                'icingadb/service/parents',
+                ['name' => $this->service->name, 'host.name' => $this->service->host->name]
+            );
+
+        $editor = $this->createSearchEditor(
+            DependencyNode::on($this->getDb()),
+            $redirectUrl,
+            [
+                LimitControl::DEFAULT_LIMIT_PARAM,
+                SortControl::DEFAULT_SORT_PARAM,
+                ViewModeSwitcher::DEFAULT_VIEW_MODE_PARAM,
+                'name',
+                'host.name'
+            ]
+        );
+
+        if ($isChildrenTab) {
+            $editor->getSuggestionUrl()->setParam('isChildrenTab');
+        }
+
+        $this->getDocument()->add($editor);
+        $this->setTitle($this->translate('Adjust Filter'));
+    }
+
+    /**
+     * Fetch the nodes for the current service
+     *
+     * @param bool $fetchParents Whether to fetch the parents or the children
+     *
+     * @return Query
+     */
+    protected function fetchNodes(bool $fetchParents = false): Query
+    {
+        $query = DependencyNode::on($this->getDb())
+            ->with([
+                'host',
+                'host.state',
+                'host.state.last_comment',
+                'service',
+                'service.state',
+                'service.state.last_comment',
+                'service.host',
+                'service.host.state',
+                'redundancy_group',
+                'redundancy_group.state'
+            ])
+            ->filter(Filter::equal(
+                sprintf('%s.service.id', $fetchParents ? 'child' : 'parent'),
+                $this->service->id
+            ))
+            ->setResultSetClass(VolatileStateResults::class);
+
+        $this->applyRestrictions($query);
+
+        return $query;
+    }
+
+    protected function createTabs(): Tabs
     {
+        if (Backend::getDbSchemaVersion() < 6) {
+            $hasDependencyNode = false;
+        } else {
+            $hasDependencyNode = DependencyNode::on($this->getDb())
+                    ->columns([new Expression('1')])
+                    ->filter(Filter::all(
+                        Filter::equal('service_id', $this->service->id),
+                        Filter::equal('host_id', $this->service->host_id)
+                    ))
+                    ->first() !== null;
+        }
+
         $tabs = $this->getTabs()
             ->add('index', [
-                'label'  => t('Service'),
+                'label'  => $this->translate('Service'),
                 'url'    => Links::service($this->service, $this->service->host)
             ])
             ->add('history', [
-                'label'  => t('History'),
+                'label'  => $this->translate('History'),
                 'url'    => ServiceLinks::history($this->service, $this->service->host)
             ]);
 
+        if ($hasDependencyNode) {
+            $tabs->add('parents', [
+                'label'  => $this->translate('Parents'),
+                'url'    => Url::fromPath(
+                    'icingadb/service/parents',
+                    ['name' => $this->service->name, 'host.name' => $this->service->host->name]
+                )
+            ])->add('children', [
+                'label'  => $this->translate('Children'),
+                'url'    => Url::fromPath(
+                    'icingadb/service/children',
+                    ['name' => $this->service->name, 'host.name' => $this->service->host->name]
+                )
+            ]);
+        }
+
         if ($this->hasPermission('icingadb/object/show-source')) {
             $tabs->add('source', [
-                'label' => t('Source'),
+                'label' => $this->translate('Source'),
                 'url'   => Links::serviceSource($this->service, $this->service->host)
             ]);
         }
@@ -223,14 +470,12 @@ protected function createTabs()
         return $tabs;
     }
 
-    protected function setTitleTab(string $name)
+    protected function setTitleTab(string $name): void
     {
         $tab = $this->createTabs()->get($name);
 
         if ($tab !== null) {
-            $tab->setActive();
-
-            $this->setTitle($tab->getLabel());
+            $this->getTabs()->activate($name);
         }
     }
 
diff --git a/library/Icingadb/Data/CsvResultSetUtils.php b/library/Icingadb/Data/CsvResultSetUtils.php
index 61995d3a2..862260cc8 100644
--- a/library/Icingadb/Data/CsvResultSetUtils.php
+++ b/library/Icingadb/Data/CsvResultSetUtils.php
@@ -6,6 +6,7 @@
 
 use DateTime;
 use DateTimeZone;
+use Icinga\Module\Icingadb\Model\DependencyNode;
 use Icinga\Module\Icingadb\Model\Host;
 use Icinga\Module\Icingadb\Model\Service;
 use ipl\Orm\Model;
@@ -67,7 +68,8 @@ protected function extractKeysAndValues(Model $model, string $path = ''): array
 
     public static function stream(Query $query): void
     {
-        if ($query->getModel() instanceof Host || $query->getModel() instanceof Service) {
+        $model = $query->getModel();
+        if ($model instanceof Host || $model instanceof Service || $model instanceof DependencyNode) {
             $query->setResultSetClass(VolatileCsvResults::class);
         } else {
             $query->setResultSetClass(__CLASS__);
diff --git a/library/Icingadb/Data/JsonResultSetUtils.php b/library/Icingadb/Data/JsonResultSetUtils.php
index 8b8857122..dc78fe094 100644
--- a/library/Icingadb/Data/JsonResultSetUtils.php
+++ b/library/Icingadb/Data/JsonResultSetUtils.php
@@ -6,6 +6,7 @@
 
 use DateTime;
 use DateTimeZone;
+use Icinga\Module\Icingadb\Model\DependencyNode;
 use Icinga\Module\Icingadb\Model\Host;
 use Icinga\Module\Icingadb\Model\Service;
 use Icinga\Util\Json;
@@ -61,7 +62,8 @@ protected function createObject(Model $model): array
 
     public static function stream(Query $query): void
     {
-        if ($query->getModel() instanceof Host || $query->getModel() instanceof Service) {
+        $model = $query->getModel();
+        if ($model instanceof Host || $model instanceof Service || $model instanceof DependencyNode) {
             $query->setResultSetClass(VolatileJsonResults::class);
         } else {
             $query->setResultSetClass(__CLASS__);
diff --git a/library/Icingadb/Widget/ItemList/DependencyNodeList.php b/library/Icingadb/Widget/ItemList/DependencyNodeList.php
index c95f883fa..3457b16e9 100644
--- a/library/Icingadb/Widget/ItemList/DependencyNodeList.php
+++ b/library/Icingadb/Widget/ItemList/DependencyNodeList.php
@@ -28,14 +28,23 @@ protected function getItemClass(): string
 
     protected function createListItem(object $data): BaseListItem
     {
+        $viewMode = $this->getViewMode();
         /** @var UnreachableParent|DependencyNode $data */
         if ($data->redundancy_group_id !== null) {
+            if ($viewMode === 'minimal') {
+                return new RedundancyGroupListItemMinimal($data->redundancy_group, $this);
+            }
+
+            if ($viewMode === 'detailed') {
+                $this->removeAttribute('class', 'default-layout');
+            }
+
             return new RedundancyGroupListItem($data->redundancy_group, $this);
         }
 
         $object = $data->service_id !== null ? $data->service : $data->host;
 
-        switch ($this->getViewMode()) {
+        switch ($viewMode) {
             case 'minimal':
                 $class = $object instanceof Host ? HostListItemMinimal::class : ServiceListItemMinimal::class;
                 break;
diff --git a/library/Icingadb/Widget/ItemList/RedundancyGroupListItemMinimal.php b/library/Icingadb/Widget/ItemList/RedundancyGroupListItemMinimal.php
new file mode 100644
index 000000000..be6b96cb6
--- /dev/null
+++ b/library/Icingadb/Widget/ItemList/RedundancyGroupListItemMinimal.php
@@ -0,0 +1,18 @@
+<?php
+
+/* Icinga DB Web | (c) 2024 Icinga GmbH | GPLv2 */
+
+namespace Icinga\Module\Icingadb\Widget\ItemList;
+
+use Icinga\Module\Icingadb\Common\ListItemMinimalLayout;
+use ipl\Web\Widget\StateBall;
+
+class RedundancyGroupListItemMinimal extends RedundancyGroupListItem
+{
+    use ListItemMinimalLayout;
+
+    protected function getStateBallSize(): string
+    {
+        return StateBall::SIZE_BIG;
+    }
+}
diff --git a/public/css/list/redundancy-group-list-item.less b/public/css/list/redundancy-group-list-item.less
index 86139084d..917444e60 100644
--- a/public/css/list/redundancy-group-list-item.less
+++ b/public/css/list/redundancy-group-list-item.less
@@ -1,6 +1,27 @@
+.item-list.detailed { //TODO: ipl-web item-list applies these changes for .default-layout class, which is removed for detailed view, because detail view can show long display names on multiple lines.
+  .redundancy-group-list-item { // but this margin rules are actually general and can be applied to all list items, so we should add them separately (without .default-layout class) in item-list.less instead to generalize them.
+    .title > * {
+      margin: 0 .28125em; // 0 calculated &nbsp; width
+
+      &:first-child {
+        margin-left: 0;
+      }
+
+      &:last-child {
+        margin-right: 0;
+      }
+    }
+  }
+}
+
 .redundancy-group-list-item {
-  .caption {
-    display: flex;
-    justify-content: end;
+  .caption .object-statistics {
+    justify-self: end;
+  }
+}
+
+.minimal > .redundancy-group-list-item {
+  .caption .object-statistics {
+    font-size: 0.75em;
   }
 }