ATProto’s inside out structure provides an opportunity for open, permissionless building on top of any component in the network, including its extensible data schema definition system, Lexicons.
One of the opportunities this presents is users sharing their data and records with multiple apps. Those apps may be direct substitutions (different clients for microblogging say), or apps that use that data in a variety of ways, such as Popfeed an app which aggregates posts about a variety of media types.
Separately ATProto apps provide mechanisms to embed other content types. Bluesky has an allow list for embeddable content (like youtube videos), or Leaflet.pub which has a variety of embedable block types that users can include when writing.
Many of us think this transcluding content can be made more powerful and we should discuss patterns for how ATProto apps might embed any record that has an at-uri.
So this is a call out for interest and questions!