OIDC vs. SAML: Which Protocol Should You Use for Single Sign-On?

We have reached a point where most B2B SaaS companies support SSO, but there is still a lot of confusion around which protocol to choose: SAML or OIDC. Both serve the same goal and allow users to authenticate using a trusted Identity Provider. We wrote a deep-dive comparison including when to use each, and gotchas to avoid.