Imagine you’re planning a surprise party. You’ve got a guest list, a secret venue, a cake, and a schedule for when everyone yells “Surprise!” If any step goes wrong—the cake arrives late, the guest of honor walks in too early—the whole experience flops. Services work the same way: they are a chain of events, some visible to the customer, others hidden behind the scenes. To design services that run smoothly and delight customers, we need a tool that reveals every link in that chain. That tool is called service blueprinting.