hi @gpa: performance very much depends on your schema and datastore, but checks are typically around 20-30ms in most standard schemas when calling SpiceDB from within the same cloud provider. If you intend to self host on AWS, then you'll need to decide what datastore to use (Postgres, MySQL, CockroachDB, etc) and that will inform your performance. If you want the "best of both worlds", Authzed does provide a Dedicated product where we will deploy everything in a cloud provider of your choice as well.