Case Study: Fortune 100 Healthcare Company achieves secure, on-time divestiture with Illumio

Fortune 100 Healthcare Service Manages Critical Divestiture with Illumio

A Fortune 100 healthcare service faced a high-stakes divestiture: selling part of its business and infrastructure to a foreign buyer while preventing exposure of non-acquired systems in its data center. With unmapped application dependencies, limited visibility from network tools, and a tight contractual timeframe, IT teams risked breaking critical applications if they cut communications arbitrarily and found consultant-led options too slow and costly.

The company deployed Illumio’s Adaptive Security Platform, using its real-time application dependency map and micro-segmentation to see all system flows and create granular policies. This allowed the buyer immediate, controlled access to relevant assets while ringfencing non-acquired systems, honored the handover deadline without re-architecting the network or hiring costly consultants, and reduced administrative burden while enabling targeted vulnerability remediation.