Define total cost of ownership (TCO) and return on investment (ROI) in IT projects and how to compute them.

• A. TCO includes all lifecycle costs; ROI measures net benefits relative to costs; compute ROI as (benefits - costs) / costs, with discounting if needed.
• B. TCO equals annual profit; ROI equals revenue growth.
• C. TCO includes only initial purchase price; ROI excludes benefits.
• D. TCO is not used in IT projects.

Answer: (A)

Total cost of ownership in IT accounts for every cost tied to owning and operating an asset or project over its entire life. That means not just the upfront price, but installation, deployment, licenses, ongoing maintenance, support, upgrades, energy use, downtime, training, security, and eventual disposal. Viewing all these pieces together helps you compare different options on a like-for-like lifetime basis rather than just comparing sticker prices.

Return on investment measures how much value the project delivers relative to what it costs. It’s typically calculated as (benefits − costs) divided by costs, giving a percentage that shows how efficiently the investment pays back. When benefits and costs stretch over several years, you often apply discounting to reflect the time value of money, but the basic idea remains: you want net gains relative to what you spent.

So, the best choice reflects that TCO covers all lifecycle costs, and ROI compares net benefits to costs, with the option to discount cash flows for longer horizons. For context, TCO isn’t only about profit or initial price, and ROI isn’t simply revenue growth; IT projects use these concepts to evaluate total ownership costs and the overall return. For example, if benefits total $150k over the life and costs total $100k, ROI is 50% (or 0.5) depending on whether you include discounting.