Microsoft is upping the stakes in the growing market for cloud-based ERP, with its Dynamics GP 2013 and NAV 2013 products now available for deployment on its Azure service. The launch, announced Tuesday, gives customers another option for cloud-based ERP (enterprise resource planning) services besides NetSuite, SAP Business ByDesign, and others. It's a bit late in coming, as Microsoft originally said availability would be toward the end of last year.