Creating an API is fundamental, but how easy it is to integrate into a developer's application stack determines its success in a crowded market. The API consumption journey consists of three phases: discover, explore, and integrate. Poorly designed APIs can lead to unnecessary plumbing, refactoring, and manual effort during integration. In contrast, high-quality SDKs provide code that is accessible, approachable, maintainable, robust, and reliable, making it easier for developers to integrate the API into their application stack. By focusing on these qualities, API providers can deliver a world-class developer experience, improving the overall user experience.