@mikebroberts Your project sounds exciting! The blend of blogging and social photos with ActivityPub support is exactly the kind of application that can benefit from federation.

Fedify should work well with your AWS Lambda setup since you're using TypeScript. Fedify supports Node.js (which Lambda offers), along with Deno and Bun. A few considerations for serverless environments:

1. For persistence, you'd want to use something like DynamoDB with Fedify's KvStore interface
2. Lambda's stateless nature means you'll need to handle message queue processing carefully
3. Cold starts might impact performance for less frequent federation operations

The docs include integration examples with Express, which you can adapt for Lambda + API Gateway. Feel free to reach out when you get to the ActivityPub implementation phase—would be happy to provide guidance on adapting Fedify to serverless architecture.

Good luck with your project!

@hongminhee Thanks! I've used Lambda / DynamoDB / serverless for many years (and written a few things about them), so that part is easy for me. But the ActivityPub side is where I need to learn. Do you have a preferred “introduction to ActivityPub” tutorial that you recommend? I'm most interested at the moment in the architecture and what the interface requirements are. By default I'll just start with reading the W3C specs.