Customer Lifecycle – Customer Life Cycle – Customer Lifecycle Analysis – Customer Lifecycle Framework – Customer Lifecycle Business Methodology – Client Lifecycle model is a key business strategy tool that shows the customer loop from the very initiation through purchase to advocacy. The importance of this framework is in the fact that the client goes through a number of stages and a business needs to be aware of these lifecycle stages and travel with the customer at each phase. There should be a tactic or a strategy for each of the customer phases that a company needs to think of. Customer Lifecycle diagram. This is one of the top business frameworks encompassing strategy, project management, IT, internal processes and client experience.