Microsoft has released two types of installation media for ax 2012. 1) Microsoft Dynamics ax 2012 base 2) Microsoft Dynamics ax 2012 feature pack So now confused?? ;-) Which one you should go for?? Read the following release note by Microsoft. "Microsoft Dynamics AX 2012 Feature Pack is the Microsoft ERP solution for enterprises that empowers your people to anticipate and embrace change so your business can thrive. It constitutes our biggest releases that target five key industries: Manufacturing, Distribution, Services Industries, Public Sector, and Retail. This release also incorporates Microsoft Dynamics ERP RapidStart Services. All of the industry solutions, Process Industries, Public Sector, Retail, and Service Industries, are now incorporated into the product and are installed the same way as other Microsoft Dynamics AX modules. Customers can enable or disable features by using configuration keys and can use features from multiple industry solutions.