Microsoft has done it for years. With a massive product line, there are bound to be compatibility problems. For example, does Configuration Manager 2007 R3 support Windows Server 2003 R2 64-bit or not? As the company grows and creates ever more products, VMware finds itself in compatibility quandaries, too. To help users avoid what could otherwise be hours-long troubleshooting sessions, VMware created the VMware Product Interoperability Matrix. Want to find out if VMware vCenter Server 2.5 U6 is compatible with VMware vCenter Server 2.5 U6? Find out with the matrix. Just about every VMware product is well-represented on the matrix and the page also includes quick links to a number of VMware compatibility guides, providing a nice one-stop shop that can make life a whole lot easier.