Hello inc. is a large concierge service for executives operating in chicago, san francisco , and new york. The company performs all kinds of services from dog walking to airport transportation. Your manager, Dan Martello wants to skip the testing phase during the companies financial erp implementation. He feels that because the systemc came from a vendor, it should work correctly. Draft a memo explaining the importance of following the SDLC and the ramifications to the business if the financial system is not tested?. list all the different phases you would include in the memo?