# Differences between Developer Edition and BYOM
<a name="sqlserver-byom-comparison"></a>

The following table compares Developer Edition BYOM with Standard and Enterprise Edition BYOM on RDS for SQL Server.


|  | Developer Edition BYOM | Standard/Enterprise Edition BYOM | 
| --- | --- | --- | 
| Licensing requirement | No License Mobility required. See [Preparing for Developer Edition](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/sqlserver-dev-edition.preparing.html). | License Mobility through Software Assurance required. See [Creating and managing BYOM engine versions for RDS for SQL Server](sqlserver-byom-creating-cev.md). | 
| Cumulative Update Download | Customer needs to provide it | Optional. If not provided, Amazon RDS downloads it. | 
| Multi-AZ | Not supported | Supported | 
| Read Replica | Not supported | Supported | 
| SQL Server Integration Service (SSIS) | Not supported | Supported | 
| SQL Server Reporting Service (SSRS), SQL Server Analysis Service (SSAS) | Not supported | Not supported |