API management is concerned with the full lifecycle of APIs and API management platforms provide tools for designing, testing, and deploying APIs, as well as monitoring usage and performance. This enables organizations to ensure their APIs are secure, reliable, and meet the needs of their users. API governance, on the other hand, is the set of policies, procedures, and standards that govern the use of APIs within an organization. API governance ensures that APIs are used consistently across different teams and projects and are developed in a way that aligns with the organization's overall strategy and goals.