IAM vs RBAC
IAM (Identity and Access Management) and RBAC (Role Based Access Control) both come up in technology conversations and get confused. Here's the plain-English difference, side by side, so you can use each one with confidence.
The key difference: IAM refers to identity and access management, while RBAC refers to role based access control — they describe different things even when they show up in the same sentence.
IAM — Identity and Access Management
The system that controls who is who and what they can touch. The first thing auditors ask for and the first thing attackers attack — get it wrong once and the cleanup is measured in quarters.
RBAC — Role Based Access Control
An access model where permissions attach to roles, not individuals. Scales cleanly until roles explode — then it needs ruthless pruning or it becomes worse than no model at all.
When to use IAM
Reach for "IAM" when the conversation is specifically about identity and access management. The system that controls who is who and what they can touch. The first thing auditors ask for and the first thing attackers attack — get it wrong once and the cleanup is measured in quarters.
When to use RBAC
Reach for "RBAC" when the conversation is specifically about role based access control. An access model where permissions attach to roles, not individuals. Scales cleanly until roles explode — then it needs ruthless pruning or it becomes worse than no model at all.
FAQs
What is the difference between IAM and RBAC?
IAM stands for Identity and Access Management — The system that controls who is who and what they can touch. The first thing auditors ask for and the first thing attackers attack — get it wrong once and the cleanup is measured in quarters. RBAC stands for Role Based Access Control — An access model where permissions attach to roles, not individuals. Scales cleanly until roles explode — then it needs ruthless pruning or it becomes worse than no model at all.
Are IAM and RBAC the same thing?
No. They're often used in the same conversation because they're related, but they describe different concepts. IAM = Identity and Access Management. RBAC = Role Based Access Control.
When should I use IAM vs RBAC?
Use IAM when you're specifically referring to identity and access management. Use RBAC when the topic is role based access control.