The Cloud is the Limit - Packet Transport Networks Come to the Rescue
Originally, cloud computing was about SaaS (Software as a Service), and now it is a widely used term in the IT industry. Although SaaS has the widest range of associated services and applications, the “as a Service” is widening and the most up-to-date term is Everything as a Service (XaaS). This refers to other cloud computing services, such as the other SaaS (Storage as a Service), PaaS (Platform as a Service), etc. These appeal to enterprises because they reduce the need to buy, maintain and power IT infrastructure. Most XaaS vendors deliver their applications via the Internet, which means that no single service provider (infrastructure or ISP) controls the entire virtual pipe between that XaaS provider and the enterprise. This leaves the WAN managers with little control over XaaS performance and delivery.