Hi Lukáš Műller,
Thanks for reaching on Microsoft Q&A!
When creating a new Cosmos DB account in the Azure portal, you may not see a separate option called “Azure Cosmos DB for MongoDB.” Instead, the correct option is:
“Azure DocumentDB (with MongoDB compatibility)”
This is the Cosmos DB API for MongoDB. Microsoft has updated the portal naming, but the functionality is unchanged. Selecting this option provisions a Cosmos DB account that exposes a MongoDB connection string (mongodb://...) and works with MongoDB drivers, Compass, and other MongoDB tools.
Reference: https://devblogs.microsoft.com/cosmosdb/category/mongodb-api/
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Thanks!
Kalyani