I wrote this article to highlight how tightly API security and IAM must be integrated at the architectural level for modern organizations. A few core points: -Implementing OAuth 2.0/OpenID Connect for token-based auth is now baseline, but RBAC/ABAC and API gateway-enforced policies are essential for granular authorization at scale -Key technical challenges include securing internal microservices APIs (not just public endpoints), applying uniform rate limits at both the user and endpoint levels, and establishing SIEM-integrated monitoring for real-time detection of anomalous API usage

For teams tackling these issues: what strategies have proven most effective for enforcing least privilege and dynamic access controls across heterogeneous API environments?