Facts Rule

I am new to the cloud platforms. I am trying to figure out which Google Cloud product would be the best fit for my needs. Here are the requirements I am trying to meet:

1. Store data in Google Cloud Platform.
2. Support potentially thousands of concurrent users running analytical queries.
3. The data volumes would be moderate (as far as Google is concerned) - we are talking 10's of GB up to potentially 100s of GB.
4. The data needs to be updated once a day (but ideally a few times a day).
5. Perhaps my biggest goal is the following: I am trying to avoid having to build a traditional data warehouse with star-schema and ETL process. I have experience with these projects, and they end up being very costly, error-prone, hard to troubleshoot, and rigid (hard to deploy changes). Instead, I am hoping to just copy my OLTP tables to GCP and query them from there, relying on GCP horsepower. I appreciate any feedback.