Moving the crown jewels to the cloud requires a trusted cloud provider. This is why almost 40% of enterprises choose to run internal applications on Azure, which was designed to deliver more choice, scalability, and speed. However, this also extends the security perimeter to the Internet - rendering network-centric security methods obsolete.
Many companies still try to rely on the network-centric methods of the old world (i.e remote access VPN), when apps ran only in the datacenter, to provide user-to-app connectivity. They're now recognizing that the complexity of appliances and the need to manage ACLs and FW policies will actually slow the move to Azure dramatically. It's time for a new approach. One built for the new world.