The Desktop Computing era has brought computing power into the hands of the users, but left them still dependent upon IT to provision the back-end infrastructure such as networks, servers and firewalls. Upkeep on in-house infrastructure tends to be daunting and very costly.
What's more, catastrophe can result at anytime from drive failures, viruses, corrupt databases, server patches and the list goes on. You also need to pay for all the hardware and a team to manage it.