Customer Success Manager (CSM)
The post-sale owner of customer outcomes: responsible for adoption, value realization, and retention across a book of accounts — proactive where support is reactive.
A Customer Success Manager owns what happens after the sale: that the customer adopts the product, reaches the outcomes they bought it for, renews, and grows. The role is defined by proaction — where support answers the questions customers ask, a CSM works the accounts that have gone quiet, the adoption that has stalled, and the renewal that is six months out, before anyone raises a hand. The core artifacts of the job are the book of business, the success plan, the QBR, and the save play.
Scope varies by company in two main ways. Commercially, some organizations have CSMs own the renewal and expansion number directly, while others keep CSMs outcome-focused and pair them with account managers who carry the paper. Structurally, the role scales differently by segment: named CSMs with deep books in enterprise, pooled or digital-first coverage in the long tail. In every variant, the CSM is the person whose job description is the customer's result rather than the company's ticket queue.