Customer retention is about keeping customers you already have. It's often cheaper to keep current customers than to find new ones. Good retention strategies focus on making customers happy and solving their problems.
In business sales, this often means checking in with customers regularly and helping them use your product well. To measure retention, businesses look at things like how many customers leave and how long they stay.
Technology helps with retention. CRM systems track customer interactions and can spot customers who might leave soon. While keeping customers is important, it's also key to find new ones. Good businesses do both well.