Developer Edition allows developers to build and test any type of application with SQL Server on 32-bit, ia64, and x64 platforms. Developer Edition includes all of the functionality of Enterprise Edition, but is licensed only for development, test, and demo use. Each license of SQL Server 2005 Developer Edition entitles one developer to use the software on as many systems as necessary and additional developers can use the software by purchasing additional licenses. For rapid deployment into production, Developer Edition can easily be upgraded to SQL Server 2005 Enterprise Edition.