# A preference for ActivityPub over the AT Protocol emerges in decentralized social media discussions

The headline points to a growing preference for ActivityPub, the protocol powering Mastodon and the Fediverse, over AT Protocol (used by Bluesky). This reflects ongoing debates about standardization, decentralization, and user control in social networking. The choice could influence which ecosystem gains more developer and user adoption.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://berjon.com/ap-at/) — Fri, 10 Jul 2026 13:40:01 +0000