# Using Microsoft Azure Database for MySQL flexible server as a source for AWS DMS
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With AWS DMS, you can use Microsoft Azure Database for MySQL flexible server as a source in much the same way as you do MySQL.

For information about versions of Microsoft Azure Database for MySQL flexible server that AWS DMS supports as a source, see [Sources for AWS DMS](CHAP_Introduction.Sources.md). 

For more information about using a customer-managed MySQL-compatible database with AWS DMS, see [Using a self-managed MySQL-compatible database as a source for AWS DMS](CHAP_Source.MySQL.md#CHAP_Source.MySQL.CustomerManaged).

## Limitations when using Azure MySQL as a source for AWS Database Migration Service
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+ The defaut value for the Azure MySQL flexible server system variable `sql_generate_invisible_primary_key` is `ON`, and the server automatically adds a generated invisible primary key (GIPK) to any table that is created without an explicit primary key. AWS DMS doesn’t support ongoing replication for MySQL tables with GIPK constraints.