What Does Additionality Mean?

Additionality is a term used to describe what a certain technological activity or intervention has accomplished. Some call additionality a notional measurement in that it’s a comparative measure (not inherently quantifiable) that helps clarify the effectiveness and capability of a particular technology or advancement.


Additionality helps to promote clarity in talking about what new technologies do and how they operate within various industries and areas of use.

Techopedia Explains Additionality

One way to explain the comparative nature of additionality is to say that additionality measures the result of doing something against the result of doing nothing. The latter can be called a baseline, or status quo, case. It’s a control case against which engineers or others can document results.

To apply this to IT, think about some new technology, such as a data manipulation tool that produces a certain set of field results in a database in a certain sequence and number. To use the principle of additionality, developers or engineers would be looking at whether that data would be ordered that way without the use of this particular tool, or whether it would be in some other state. Clarifying with additionality would then allow the software product maker to claim that the program does certain things to data.


Related Terms

Latest Buzzwords and Jargon Terms

Related Reading

Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…