Why Authentication Is Becoming a Core Product Decision in the Age of AI Agents

Nine months ago, if someone had asked me about OAuth, OIDC, authorization policies, or identity infrastructure, I probably would have smiled, nodded, and quietly changed the subject.

Today, I spend most of my days working around these concepts.

I'm a product marketer at MonoCloud, and while I'm not an engineer, I work closely with people building identity infrastructure for users, APIs, services, and AI agents. The more conversations I have, the more architecture diagrams I stare at, and the more product decisions I unpack, the more convinced I become of one thing:

Authentication is one of the most underestimated challenges in modern SaaS.

Not because it's new.