VMware (Broadcom) Cloud

After Broadcom's $61B acquisition, VMware Cloud controls the virtualization layer of 400,000+ enterprise data centers globally, a position unmatched by any pure cloud provider on this list. Its vSphere and NSX manage 60% of all enterprise VMs worldwide, representing the most entrenched software installed base in the industry, with a 90% Fortune 500 penetration rate. This acquisition remains one of the decade's most scrutinized tech M&A deals.