How to Handle OAuth Across Many Integrations

Managing OAuth across multiple integrations effectively requires centralizing authorization into a unified system that handles provider configuration, token storage, refresh logic, scopes, and error handling. As the number of API integrations grows, OAuth transitions from being per-integration code to becoming a critical piece of infrastructure, with potential issues like broken tokens and inconsistent scopes becoming significant challenges. To address these, a centralized architecture involving a secure token store, a unified OAuth service layer, standardized redirect handling, proactive token refresh, concurrency-safe token refresh, scope normalization, and robust API request guardrails is recommended. This centralized approach improves system reliability and operational efficiency by preventing issues like token drift, revocation errors, and refresh failures while maintaining security and compliance. For SaaS products, treating OAuth as infrastructure rather than feature code ensures consistent integration behavior, predictable failures, faster onboarding, and scalable systems.

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