Multiple data sources

I have multiple data sources from which I need to load data to Metabase for BI and reporting. Some of these are CloudSQL (on GCP), MySQL (On prem), Excel worksheets etc. What’s the best way to be able to import these and run BI/dashboards - assuming a single Dashboard would require access to all these multiple data sources?
Do I need to maintain an external Data warehouse or can this be done within Metabase by simply importing data from these multiple data sources to Metabase and maintaining a local copy within Metabase?

Hi @Rome2345
You can have multiple data sources on a single dashboard. Each data source would be setup in Metabase.
Metabase does not import the data - it just sends queries to the data source and presents the results.

noted, thanks