Customer Success
Customer success (CS) is the business practice of making sure the customers are happy while using your product or service.
Its main goal is to create a positive customer experience and maintain healthy relationships with the clients at the later stages of their journey, i.e., post-purchase.
CS teams are typical for organizations that have a longer customer lifespan, e.g., subscription-based or service businesses.
Related terms:
A customer success manager (CSM) is an employee in charge of nurturing customer relationships post-sale.