Yes that's pretty much what we're going for. I'm less familiar with DynamoDB Streams but we're taking inspiration from Postgres triggers https://www.postgresql.org/docs/current/sql-createtrigger.ht...
https://debezium.io/documentation/reference/2.5/transformati...
For example, the original method for connecting Postgres to Materialize.com was using a Debezium stream: https://materialize.com/docs/ingest-data/cdc-postgres-kafka-...