Developer experience (DX) is crucial for the success of an API in a competitive landscape where ease of use and comprehensive documentation can set one product apart from another. While traditional focus on performance metrics like uptime and latency remains important, DX emphasizes understanding and meeting the needs of developers through user-friendly onboarding, clear documentation, code samples, and effective support systems. To enhance DX, APIs should offer features that simplify first-time use, provide real-time feedback, and facilitate troubleshooting. Moreover, fostering an engaged developer community and offering tools such as changelogs, versioning support, and feedback mechanisms can drive API adoption and retention. Companies like ReadMe advocate for a structured DX approach, suggesting that APIs be viewed as products with lifecycle stages—evaluation, engagement, and retention—each requiring specific strategies to optimize developer interaction and satisfaction.