# Can PostgreSQL Replace Microsoft SQL Server?

> PostgreSQL can directly replace Oracle, SQL Server, and MongoDB at the kernel level. Of course, the most thorough replacement is SQL Server - AWS's Babelfish provides wire-protocol-level compatibility.

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LLMS index: [llms.txt](/llms.txt)

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[![featured](/img/hero/pg/pg-replace-mssql.jpg)](https://vonng.com/en/pg/pg-replace-mssql/)

PostgreSQL can directly replace Oracle, SQL Server, and MongoDB at the kernel level. Of course, the most thorough replacement is SQL Server - AWS's Babelfish provides wire-protocol-level compatibility. [**Read more**](https://vonng.com/en/pg/pg-replace-mssql/)