Identity integration starts post-close. That is not the problem. The problem is whether the platform was built for serial acquisition before the first deal closed.
Most enterprises are still running SAML as if it's 2010. The perimeter has moved, and the identity layer hasn't caught up. The 5 Pillars of Governance Architecture (SAML, OAuth, OIDC, Zero Trust, Future Layer) isn't a migration plan. It's the architectural reset that makes Zero Trust operationally real.
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