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<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<title>Service Workers Working Group Charter</title>
<link rel="stylesheet" href="https://www.w3.org/2005/10/w3cdoc.css" type="text/css" media="screen">
<link rel="stylesheet" type="text/css" href="https://www.w3.org/OldGuide/pubrules-style.css">
<link rel="stylesheet" type="text/css" href="https://www.w3.org/2006/02/charter-style.css">
<style>
main {
max-width: 60em;
margin: 0 auto;
}
ul#navbar {
font-size: small;
}
dt.spec {
font-weight: bold;
}
dt.spec new {
background: yellow;
}
ul.out-of-scope > li {
font-weight: bold;
}
ul.out-of-scope > li > ul > li{
font-weight: normal;
}
.issue {
background: cornsilk;
font-style: italic;
}
.todo {
color: #900;
}
footer {
font-size: small;
}
</style>
</head>
<body>
<header id="header">
<aside>
<ul id="navbar">
<li><a href="#scope">Scope</a></li>
<li><a href="#deliverables">Deliverables</a></li>
<li><a href="#success-criteria">Success Criteria</a></li>
<li><a href="#coordination">Coordination</a></li>
<li><a href="#participation">Participation</a></li>
<li><a href="#communication">Communication</a></li>
<li><a href="#decisions">Decision Policy</a></li>
<li><a href="#patentpolicy">Patent Policy</a></li>
<li><a href="#licensing">Licensing</a></li>
<li><a href="#about">About this Charter</a></li>
</ul>
</aside>
<p>
<a href="https://www.w3.org/"><img alt="W3C" height="48" src="https://www.w3.org/Icons/w3c_home" width="72"></a>
</p>
</header>
<main>
<h1 id="title"><i class="todo">PROPOSED</i> Service Workers Working Group Charter</h1>
<!-- delete PROPOSED after AC review completed -->
<p class="mission">The <strong>mission</strong> of the <a href="https://www.w3.org/groups/wg/service-workers">Service Workers Working Group</a> is to enable Web applications
to take advantage of persistent background processing, including hooks to enable bootstrapping of web applications while offline.</p>
<div class="noprint">
<p class="join"><a href="https://www.w3.org/groups/wg/service-workers/join">Join the Service Workers Working Group.</a></p>
</div>
<p style="padding: 0.5ex; border: 1px solid green"> This proposed charter is available
on <i class="todo"><a href="https://github.com/w3c/charter-drafts/">GitHub</a>.
Feel free to raise <a href="https://github.com/w3c/charter-drafts/issues">issues</a></i>.
</p>
<div id="details">
<table class="summary-table">
<tr id="Status">
<th>
Charter Status
</th>
<td>
See the <a href="https://www.w3.org/groups/wg/service-workers/charters">group status page</a> and <a href="#history">detailed change history</a>.
</td>
</tr>
<tr id="Duration">
<th>
Start date
</th>
<td>
<i class="todo">[dd monthname 2022] (date of the "Call for Participation", when the charter is approved)</i>
</td>
</tr>
<tr id="CharterEnd">
<th>
End date
</th>
<td>
<i class="todo">[dd monthname 2024]</i> (Start date + 2 years)
</td>
</tr>
<tr>
<th>
Chairs
</th>
<td>
Jake Archibald, Google
</td>
</tr>
<tr>
<th>
Team Contacts
</th>
<td>
<a href="mailto:[email protected]">Yves Lafon</a> (0.1 <abbr title="Full-Time Equivalent">FTE</abbr>)
</td>
</tr>
<tr>
<th>
Meeting Schedule
</th>
<td>
<strong>Teleconferences:</strong> topic-specific calls may be held
<br>
<strong>Face-to-face:</strong> we will meet during the W3C's annual Technical Plenary week; additional face-to-face meetings may be scheduled by consent of the participants, usually no more than 3 per year.
</td>
</tr>
</table>
</div>
<section id="scope" class="scope">
<h2>Scope</h2>
<p>Web Applications traditionally assume that the network is reachable, which is not always the case. The Working Group will specify event-driven services between the network layer and the application,
allowing it to handle network requests gracefully even while offline.</p>
</section>
<section id="deliverables">
<h2>
Deliverables
</h2>
<p>Updated document status is available on the <a href="https://www.w3.org/groups/wg/service-workers/publications">group publication status page</a>.</p>
<p><i>Draft state</i> indicates the state of the deliverable at the time of the charter approval. The Working Group intends to publish the latest state of their work as Candidate Recommendation (with Snapshots) and does not intend to advance their documents to Recommendation (no expected milestones).</p>
<section id="normative">
<h3>
Normative Specifications
</h3>
<p>
The Working Group will deliver the following W3C normative specifications:
</p>
<dl>
<dt id="sw" class="spec"><a href="https://www.w3.org/TR/service-workers/" rel="versionof">Service Workers</a></dt>
<dd>
<p>This specification defines an API to enable applications to take advantage of persistent background processing.</p>
<p><b>Draft state:</b> <a href="https://www.w3.org/TR/2022/CRD-service-workers-20220712/">Candidate Recommendation Draft</a>
<p class="milestone"><b>Expected completion:</b> Candidate Recommendation Snapshots</p>
<p><b>Adopted Draft:</b> <a href="https://www.w3.org/TR/2022/CRD-service-workers-20220712/">Service Workers</a>, 12 July 2022.
<p><b>Exclusion Draft:</b> <a href="https://www.w3.org/TR/2019/CR-service-workers-1-20191119/">Service Workers 1</a>, 19 November 2019.
<p>associated <a href="https://www.w3.org/mid/[email protected]">Call for exclusion</a> started on 2019-11-19, ended on 2020/01/18
<p><b>Exclusion Draft Charter:</b> <a href="https://www.w3.org/2017/08/sw-charter.html">https://www.w3.org/2017/08/sw-charter.html</a>
</dd>
</dl>
</section>
<section id="ig-other-deliverables">
<h3>
Other Deliverables
</h3>
<p>
The Service Workers Working Group will determine the next steps for the following WICG specification, and may by group decision adopt it as a deliverable:
</p>
<dl>
<dt id="background-fetch" class="spec">Background Fetch</dt>
<dd><p>An API to handle large uploads/downloads in
the background with user visibility.</p>
<p class="draft-status"><b>Draft state:</b> <a href="https://wicg.github.io/background-fetch/">Adopted
specification</a> from <a href="https://www.w3.org/community/wicg/">WICG</a></p>
</dd>
</dl>
<p>Next steps for Background Fetch may include promotion to Working Group deliverable (with agreed changes).</p>
<p>The following specifications are in scope for <em>discussion and incubation</em> within the Working Group, but formal publication on the Recommendation track would require re-charter to get consensus and commitments:</p>
<dl>
<dt id="background-sync" class="spec">Web Background Synchronisation</dt>
<dd> <p>This specification defines an API that uses Service Workers to permit both one-off and periodic synchronisation of data,
for applications that use non-local data storage.</p>
<p class="draft-status"><b>Draft state:</b> <a href="https://wicg.github.io/BackgroundSync/spec/">Adopted
specification</a> from <a href="https://www.w3.org/community/wicg/">WICG</a></p>
</dd>
<dt id="periodic-background-sync" class="spec">Web Periodic Background Synchronisation</dt>
<dd> <p>This specification describes a method that enables web applications to periodically synchronize data and content in the background.</p>
<p class="draft-status"><b>Draft state:</b> <a href="https://wicg.github.io/BackgroundSync/spec/PeriodicBackgroundSync-index.html">Adopted
specification</a> from <a href="https://www.w3.org/community/wicg/">WICG</a></p>
</dd>
</dl>
<p>Next steps for those documents may include promotion to Working Group deliverables (via a new charter), or deprecation.</p>
<p>
Other non-normative documents may be created such as:
</p>
<ul>
<li>Use case and requirement documents;</li>
<li>Test suite and implementation report for the specification;</li>
<li>Primer or Best Practice documents to support web developers when designing applications.</li>
</ul>
</section>
</section>
<section id="success-criteria">
<h2>Success Criteria</h2>
<p>In order to advance to <a href="https://www.w3.org/Consortium/Process/#RecsPR" title="Proposed Recommendation">Proposed Recommendation</a>, each normative specification is expected to have <a href="https://www.w3.org/Consortium/Process/#implementation-experience">at least two independent implementations</a> of every feature defined in the specification.</p>
<p>Each specification should contain sections detailing all known security and privacy implications for implementers, Web authors, and end users.</p>
<p>There should be testing plans for each specification, starting from the earliest drafts.</p>
<p>To promote interoperability, all changes made to specifications should have <a href='https://www.w3.org/2019/02/testing-policy.html'>tests</a>.</p>
<p>All new features should be supported by at least two intents to implement before being incorporated in the specification.</p>
<p>If a critical mass of key stakeholders and implementers of this technology do not join the group, its charter should be re-examined by the W3C.</p>
</section>
<section id="coordination">
<h2>Coordination</h2>
<p>For all specifications, this Working Group will seek <a href="https://www.w3.org/Guide/documentreview/#how_to_get_horizontal_review">horizontal review</a> for
accessibility, internationalization, performance, privacy, and security with the relevant Working and
Interest Groups, and with the <a href="https://www.w3.org/2001/tag/" title="Technical Architecture Group">TAG</a>.
Invitation for review must be issued during each major standards-track document transition, including
<a href="https://www.w3.org/Consortium/Process/#RecsWD" title="First Public Working Draft">FPWD</a>.
The Working Group is encouraged to engage collaboratively with the horizontal review groups throughout development of
each specification.
The Working Group is advised to seek a review at least 3 months before first entering
<a href="https://www.w3.org/Consortium/Process/#RecsCR" title="Candidate Recommendation">CR</a> and is encouraged
to proactively notify the horizontal review groups when major changes occur in a specification following a review.</p>
<p>Additional technical coordination with the following Groups will be made, per the <a href="https://www.w3.org/Consortium/Process/#WGCharter">W3C Process Document</a>:</p>
<section>
<h3 id="w3c-coordination">W3C Groups</h3>
<dl>
<dt><a href="https://www.w3.org/groups/wg/webapps">Web Applications Working Group</a></dt>
<dd>This group enables improved client-side application development on the Web,
including application programming interfaces (APIs) for client-side development.</dd>
<dt><a href="https://www.w3.org/groups/wg/webperf">Web Performance Working Group</a></dt>
<dd>This group provides methods to measure and improve aspects of application performance of
user agent features and APIs.</dd>
<dt><a href="https://www.w3.org/groups/wg/webappsec">Web Application Security Working Group</a></dt>
<dd>This group develops security and policy mechanisms to improve the security of Web Applications,
and enable secure cross-origin communication.</dd>
</dl>
</section>
<section>
<h3 id="external-coordination">External Organizations</h3>
<dl>
<dt><a href="http://ecma-international.org/memento/TC39.htm">TC39</a></dt>
<dd>ECMAScript Standards Body</dd>
<dt><a href="https://whatwg.org/">WHATWG</a>
</dt><dd>The Web Hypertext Application Technology Working Group (WHATWG) is a community of people interested in
evolving the web through standards and tests.
</dd>
</dl>
</section>
</section>
<section class="participation">
<h2 id="participation">
Participation
</h2>
<p>
To be successful, this Working Group is expected to have 6 or more active participants for its duration,
including representatives from the key implementors of this specification, and active Editors and Test Leads for each specification.
The Chairs, specification Editors, and Test Leads are expected to contribute half of a working day per week
towards the Working Group. There is no minimum requirement for other Participants.
</p>
<p>
The group encourages questions, comments and issues on its public mailing lists and document repositories, as described in <a href='#communication'>Communication</a>.
</p>
<p>
The group also welcomes non-Members to contribute technical submissions for consideration upon their agreement to the terms of the <a href="https://www.w3.org/Consortium/Patent-Policy/">W3C Patent Policy</a>.
</p>
<p>Participants in the group are required (by the <a href="https://www.w3.org/Consortium/Process/#ParticipationCriteria">W3C Process</a>) to follow the
W3C <a href="https://www.w3.org/Consortium/cepc/">Code of Ethics and Professional Conduct</a>.</p>
</section>
<section id="communication">
<h2>
Communication
</h2>
<p id="public">
Technical discussions for this Working Group are conducted in <a href="https://www.w3.org/Consortium/Process/#confidentiality-levels">public</a>: the meeting minutes from teleconference and face-to-face meetings will be archived for public review, and technical discussions and issue tracking will be conducted in a manner that can be both read and written to by the general public. Working Drafts and Editor's Drafts of specifications will be developed in public repositories and may permit direct public contribution requests.
The meetings themselves are not open to public participation, however.
</p>
<p>
Information about the group (including details about deliverables, issues, actions, status, participants, and meetings) will be available from the <a href="https://www.w3.org/sw/">Service Workers Working Group home page.</a>
</p>
<p>
Most Working Group teleconferences will focus on discussion of particular specifications, and will be conducted on an as-needed basis.
</p>
<p>
This group primarily conducts its technical work on <a id="public-github" href="https://github.com/w3c/ServiceWorker/issues">GitHub issues</a>.
The public is invited to review, discuss and contribute to this work.
</p>
<p>
The group may use a Member-confidential mailing list for administrative purposes and, at the discretion of the Chairs and members of the group, for member-only discussions in special cases when a participant requests such a discussion.
</p>
</section>
<section id="decisions">
<h2>
Decision Policy
</h2>
<p>
This group will seek to make decisions through consensus and due process, per the <a href="https://www.w3.org/Consortium/Process/#Consensus">W3C Process Document (section 5.2.1, Consensus)</a>. Typically, an editor or other participant makes an initial proposal, which is then refined in discussion with members of the group and other reviewers, and consensus emerges with little formal voting being required.</p>
<p>
However, if a decision is necessary for timely progress and consensus is not achieved after careful consideration of the range of views presented, the Chairs may call for a group vote and record a decision along with any objections.
</p>
<p>
To afford asynchronous decisions and organizational deliberation, any resolution (including publication decisions) taken in a face-to-face meeting or teleconference will be considered provisional.
A call for consensus (CfC) will be issued for all resolutions (for example, via email, GitHub issue or web-based survey), with a response period from <span id='cfc'>one week</span>, depending on the chair's evaluation of the group consensus on the issue.
If no objections are raised by the end of the response period, the resolution will be considered to have consensus as a resolution of the Working Group.
</p>
<p>
All decisions made by the group should be considered resolved unless and until new information becomes available or unless reopened at the discretion of the Chairs or the Director.
</p>
<p>
This charter is written in accordance with the <a href="https://www.w3.org/Consortium/Process/#Votes">W3C Process Document (Section 5.2.3, Deciding by Vote)</a> and includes no voting procedures beyond what the Process Document requires.
</p>
</section>
<section id="patentpolicy">
<h2>
Patent Policy
</h2>
<p>
This Working Group operates under the <a href="https://www.w3.org/Consortium/Patent-Policy/">W3C Patent Policy</a> (Version of 15 September 2020). To promote the widest adoption of Web standards, W3C seeks to issue Web specifications that can be implemented, according to this policy, on a Royalty-Free basis.
For more information about disclosure obligations for this group, please see the <a href="https://www.w3.org/groups/wg/service-workers/ipr">licensing information</a>.
</p>
</section>
<section id="licensing">
<h2>Licensing</h2>
<p>This Working Group will use the <a href="https://www.w3.org/Consortium/Legal/copyright-software">W3C Software and Document license</a> for all its deliverables.</p>
</section>
<section id="about">
<h2>
About this Charter
</h2>
<p>
This charter has been created according to <a href="https://www.w3.org/Consortium/Process/#GAGeneral">section 3.4</a> of the <a href="https://www.w3.org/Consortium/Process/">Process Document</a>. In the event of a conflict between this document or the provisions of any charter and the W3C Process, the W3C Process shall take precedence.
</p>
<section id="history">
<h3>
Charter History
</h3>
<p>The following table lists details of all changes from the initial charter, per the <a href="https://www.w3.org/Consortium/Process/#CharterReview">W3C Process Document (section 4.3, Advisory Committee Review of a Charter)</a>:</p>
<table class="history">
<tbody>
<tr>
<th>
Charter Period
</th>
<th>
Start Date
</th>
<th>
End Date
</th>
<th>
Changes
</th>
</tr>
<tr>
<th>
<a href="https://www.w3.org/2017/08/sw-charter">Initial Charter</a>
</th>
<td>
02 August 2017
</td>
<td>
30 June 2019
</td>
<td>
none
</td>
</tr>
<tr>
<th><!-- https://lists.w3.org/Archives/Member/w3c-ac-members/2019JulSep/0002.html -->
<a href="https://www.w3.org/2017/08/sw-charter">Charter Extension</a>
</th>
<td>
02 August 2017<!-- or should it be the first day of
the extension, aka 01 July 2019 -->
</td>
<td>
31 December 2019
</td>
<td>
none
</td>
</tr>
<tr>
<th>
<a href="https://lists.w3.org/Archives/Member/w3c-ac-members/2020JanMar/0008.html">Rechartered</a>
</th>
<td>
27 January 2020
</td>
<td>
30 June 2020
</td>
<td>
<p>Rechartering adding one potential new
deliverables: <a href="#background-fetch">Background Fetch</a>.</p>
</td>
</tr>
<tr>
<th>
<a href="https://lists.w3.org/Archives/Member/w3c-ac-members/2020AprJun/0056.html">Charter Extension</a>
</th>
<td>
17 June 2020<!-- or should it be the first day of
the extension, aka 01 July 2019 -->
</td>
<td>
31 December 2020
</td>
<td>
none
</td>
</tr>
<tr>
<th>
<a href="https://lists.w3.org/Archives/Member/w3c-ac-members/2020OctDec/0045.html">Charter Extension</a>
</th>
<td>
1 January 2021
</td>
<td>
31 March 2020
</td>
<td>
none
</td>
</tr>
<tr>
<th><a href="https://lists.w3.org/Archives/Member/w3c-ac-members/2021JanMar/0021.html">Chairs change</a>
</th>
<td>
5 February 2021
</td>
<td>
-
</td>
<td>
Matt Falkenhagen (Google Inc.) replacing Jungkee Song (Microsoft Corporation).
</td>
</tr>
<tr>
<th><a href="https://www.w3.org/2021/05/sw-charter">Rechartered</a>
</th>
<td>
19 May 2021
</td>
<td>
31 May 2022
</td>
<td>
none
</td>
</tr>
</tbody>
</table>
</section>
<section id="changelog">
<h3>Change log</h3>
<!-- Use this section for changes _after_ the charter was approved by the Director. -->
<p>Changes to this document are documented in this section.</p>
<!--
<dl id='changes'>
<dt>2022-07-12</dt>
<dd>Updated Service Workers specification, per new publication <a href="https://www.w3.org/TR/2022/CRD-service-workers-20220712/">https://www.w3.org/TR/2022/CRD-service-workers-20220712/</a></dd>
</dl>
-->
</section>
</section>
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<a href="mailto:[email protected]">Yves Lafon</a>
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