Yes, our self-hosted option can plug into existing ClickHouse servers and will set up the necessary schema for highlight to function. The infrastructure configuration is driven by the docker compose file. More info in our docs: https://www.highlight.io/docs/getting-started/self-host/self...

I believe you misinterpreted the question. OP was asking if, for your hosted option, you allow customers to access the database used on the hosted option.

For the cloud version (app.highlight.io), we currently don't support plugging into your own infrastructure. We also don't give you direct access to the database we use. For the self-hosted version however, you can use any infrastructure you want.