Hi @Anonymous Thank you for letting us know.
I was able to check with the cosmosDb product group and this is what they said.
There aren’t any public references for trading platforms or documentation on how these systems are built using Cosmos DB or any Azure cloud services. But you can visit Azure Architecture Center and browse the content on Financial Services architectures there. Please see also the banking and capital markets public references which include Cosmos DB.
Regards,
Oury