The database lives outside the lambda environment. Unfortunately the serverless stack still doesn't have a a way of solving a problem when it comes to storing the data inside the serverless functions.

Webiny uses MongoDB, for the manage hosted versions, we actually run on AWS DocumentDB.

Hope this answers your question.

Interesting. Why not use DynamoDB?

Just to add to that. We also have a MySQL/Aurora database adapter. Since the built-in database layer allows you to write an adapter for any database type, be that NoSQL or SQL. If you are interested in using Webiny with DynamoDB, it's possible, with the right driver.

Ease of development - especially when you are developing locally. Also we didn't want to get locked into AWS ecosystem, especially since we have an open source version, which you can technically host yourself on any cloud provider.