koa-compose provides a middleware composition mechanism for Koa applications. It allows developers to chain multiple middleware functions together into a single, cohesive middleware unit. This promotes code reusability and enhances application structure by simplifying middleware management. koa-compose executes middleware in a stack-like order, ensuring predictable execution flow and control over request handling. Ideal for structuring complex request processing within Koa-based applications, streamlining code and improving maintainability.