For information on integrating SSRS with Google Cloud Platform, I found these links for you.
https://cloud.google.com/blog/topics/data-warehousing/google-bigquery-and-sql-server-ssis-and-ssrs
I don’t know much about TFS and Google Cloud Platform. This link provides a Google Cloud tool for Team Foundation Server. Maybe you can use it as a reference.
https://github.com/GoogleCloudPlatform/google-cloud-tfs
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Best regards,
Aniya