The time has come to obsolete the waterfall process. Deployments of Network Functions must embrace Continuous Delivery methodologies as the industry moves towards fully software-based virtualized infrastructure.
Continuous Delivery processes can enable operators to streamline implementation projects,reduce overall costs and gain immediate access to new features. Traditionally, telecoms operators have used a classic waterfall process to manage deployments of network elements. The waterfall model consists of a succession of clearly defined stages including requirements gathering, functional specification, detailed design, implementation, and various stages of testing to ensure that a new system is built and deployed in accordance with the needs of the operator and subscribers.