APISharing

API sharing is the practice of making software interfaces available for use by other developers, applications, or organizations. It enables programmatic access to features, data, or services through standardized interfaces. API sharing can occur within a single organization (internal APIs), between partner organizations (partner APIs), or publicly for broad use (public APIs). Markets and platforms also support API sharing through app stores and API catalogs.

Access control and security are central to API sharing. Providers typically require authentication (such as API keys or OAuth 2.0) and enforce rate limits, quotas, and terms of service. API descriptions are published in contracts using specifications like OpenAPI or GraphQL schemas, helping developers understand capabilities and usage. Lifecycle practices include versioning, deprecation policies, and monitoring.

Governance and interoperability are aided by common standards, data formats (JSON, XML), and architectural patterns (REST, GraphQL). Economic models range from free access to tiered pricing and revenue-sharing arrangements for paid APIs. Strong governance also covers privacy, data protection, and compliance with applicable regulations.

Benefits of API sharing include accelerated development, ecosystem growth, and new business models for providers. Risks include security vulnerabilities, abuse, data leakage, and dependence on external services. Effective API sharing programs rely on clear documentation, reliable service levels, and active management of catalogs, onboarding, and versioning. Notable platforms provide widely used public APIs and marketplace ecosystems.