A mature IAM program identifies the gaps in your identity fabric, establishes your priorities, and are executes on a plan. Encompassing all four IAM pillars (AM, CIAM, IGA, and PAM), your detection and remediation capabilities, and even the cost/benefit analysis of your identity investments, IAM maturity is arguably the most important metric for your IAM performance.
By understanding what goes into a maturity model you stand to make informed decisions about what needs to go into your identity program.
