I’ll be writing a follow up post in the new year with more details, but essentially it’s a schema (we’re using jsonnet) that contains fields, their types, documentation, categorisation (e.g. is it personal data, what entity it refers to, etc), etc. We then take that and create resources (e.g. PubSub, BigQuery) and deploy services (e.g. a service to archive to BugQuery, data handling services, and more to come).
As I say, more details to come in a future post!