OpenID Connect (OIDC) in a production environment demands precision. Every configuration choice, every endpoint, every key rotation must be exact. OAuth 2.0 is only part of the picture; OIDC layers authentication on top of authorization, ensuring identities are verified while secure API access remains intact.
In production, missteps cost uptime. The first step is to lock down your issuer URL. It must match exactly between your identity provider and your application. If it changes, tokens will fail validation. Enable HTTPS everywhere; self-signed certificates belong in dev, not in production.
Set strict token lifetimes. Short-lived ID tokens reduce risk if compromised. Use refresh tokens only when necessary, and store them encrypted at rest. Rotate signing keys regularly, and publish them via the .well-known/openid-configuration endpoint so clients can update without downtime.
Scope management is not optional. Access tokens should carry only what’s needed. Over-permissioning in OIDC is a silent security gap that attackers love. Use the openid, profile, and email scopes with intention, not habit.