Currently we have already supported data sharing.https://databend.rs/doc/sql-commands/ddl/share/ , thus far we have designed our data sharing protocol with simple RESTful api and allow user to query accross different tenant under fine-grained permissions.
I think it is the right timing to implement an open source sharing endpoint.

Supposed feature:

1. A simple server for sharing operator testing and debugging
2. A lambda-runtime release for serverless deployment
3. Written in rust, thus we could use it with opendal(https://github.com/datafuselabs/opendal) for much easier maintainence on sharing endpoint

Possible features:

1. also support delta-sharing and other data lake sharing protocols on a single sharing endpoint
2. support more runtimes such as cloudflare worker