The number one concern about the cloud among cloud users across the board is security. The security protocol a business has in place today for its applications internally should not change just because it is thinking of moving to the cloud. If an organization has specific protocols and standards that must be followed and have been assigned to its business applications, the organization needs to think about and understand, from a cloud provider, how its data and security policies are still in place within that service provider’s infrastructure. Companies should check with potential service providers to understand how they segment/isolate customer data within a multi-tenant environment. Also understand where the firewalls are located within the cloud infrastructure and how the service provider controls access to the environment.