Decentralization Trade Offs in AT Protocol and ActivityPub
talx.dod.ngo/dwebcamp-2026/talk/9DWTF3/
This is a panel I was asked to moderate at DWeb Camp Berlin.
Christine Lemmer-Webber is lead author and co-editor of the W3C ActivityPub specification. Daniel Holmgren is Head of Protocol at Bluesky, working on the AT Protocol specification at the IETF. Join us for a discussion on decentralization trade-offs and other design decisions in the two protocols, and what that means for different architectures, structures, and even future points of convergence.
For background check out this recent article with very useful concept drawings: There are no Instances in atproto by Dan Abramov
Also, the articles that started the conversation:
How Decentralized is Bluesky? by Christine Lemmer-Webber
Reply on Bluesky & Decentralization by Bryan Newbold
Re: Re on Bluesky & Decentralization by Christine Lemmer-Webber