How to test my application integration to SharePoint at scale? Scale users and content in SharePoint to understand how my application performs.

Question

We're at a point in the development cycle where we want to start preliminary scalability and performance testing to validate our architecture and data storage handling.

 

We've been getting by with MS Visual Studio dev accounts. However, the dev accounts have some limitations with regards to functionality and Microsoft 365 (formerly Office 365) user accounts. We do have one Business Standard account in the dev environment to get around the functionality limitation.

 

We would like to make a connection with someone at Microsoft to discuss the best options for dev partners to test large numbers of tenants, users accounts, mail volume, etc., without having to purchase 1000 Business accounts with 10K-100K users.

 

Unfortunately, our attempts for finding a contact are not yielding results.

Question: Is there a Microsoft contact to discuss how to support this testing? Most likely someone from their developer partner program(s).