.com/solid/specification/milestones">milestones</a>.</p>

<h3 id="weekly-recurring-and-well-attended-calls-on-specific-themes-to-develop-solid">Weekly recurring and well-attended calls on specific themes to develop Solid</h3>
<p>Every Thursday there has been a <a href="https://www.w3.org/community/solid/">W3C Solid Community Group</a> alternating between 16:00 CET and 10:00 CET. On top of that, there have been more in-depth calls on specific topics such as authentication, data interoperability, and authoris