A financial services company runs a large VMware vSphere environment on-premises with over 400 virtual machines supporting a mix of legacy and custom applications. Their data center lease expires in 90 days, and they must vacate. The applications have complex interdependencies and heavy use of vSphere features (vMotion, DRS, custom networking). Leadership wants the fastest possible exit with minimal application changes and the ability to modernize gradually afterward. Which migration approach best meets these requirements?