Abstract: A method of developing a software product, including steps of: receiving sets of parameters (e.g., manifests) describing computing environments for a plurality of customers, at least some of said sets of parameters for some customers differing from others of said sets of parameters for other customers; receiving an indication from at least one of said customers of a bug or condition that occurs with said software product running under one of said sets of parameters; and testing said software product in a computing environment configured in accordance with said sets of parameters including at least said one of said sets of parameters indicated by said one of said customers. The sets of parameters can also be sent back to customers to help with disaster recovery. Also, a method of distributing said software product and servers that perform these methods.