What is the term used to describe the cost of the solution after the solution has been implemented in production by a vendor?

Total Cost of Ownership (TCO) is a financial metric that accounts for every cost associated with acquiring, deploying, operating, and maintaining a solution over its full lifecycle. It explicitly includes ongoing costs after a vendor implements the solution in production, such as support, maintenance, training, and infrastructure. TCO is the standard industry term used to evaluate the true long-term financial impact of a technology investment beyond the initial purchase price.

'Total ownership costing' is not a recognized or standard IT financial or procurement term.

'Sustainability fees' is not a standard IT cost category and does not describe ongoing post-implementation operational costs in a recognized framework.

'Lifecycle maintenance fees' refers only to a subset of ongoing costs and is not the accepted term that encompasses the full scope of costs before and after implementation.