What do you think of this short version of a definition of Customer Lifecycle Marketing? There is a longer version with some of the subtleties. If curious, I can DM it to you.
B2B Customer Lifecycle Marketing is the practice of using marketing strategies, programs, content, data, and tools to guide customers through their post-sales lifecycle—from onboarding through renewal and beyond. The mission of a customer lifecycle marketer is to help customers realize more value than expected while increasing retention and generating additional revenue for the company.