What code? An on-prem VMWare deployment is all about hardware, storage, networking, and fuck-tons of planning, budgeting, and approvals. There is little to no customer-written code in a typical VMWare farm, except maybe some Ansible or whatever for minor customizations and automation.
Only to the extent that the team is competent enough to properly test all that boilerplate code, which is very far from a given. A relative of mine in IT has had a large internal-tooling migration get dragged on for years by the persistently bug-ridden code of one of the groups working on it.