What Is a Security Token Service?

This blog post provides practical guidance for versioning consumer identity APIs in B2C contexts, comparing path, header, and media-type strategies; addressing passwordless adoption and device diversity; and leveraging API gateways (e.g., Azure APIM) for JWT validation, multi-issuer support, and policy-driven migrations. It emphasizes risk-based lifecycle management, staged sunsetting of insecure versions, feature flags, monitoring, and clear communication to maintain security and reliability without disrupting users.