Last updated
CRO means conversion rate optimization. It is the practice of increasing the share of visitors who take a defined action, such as a purchase, a signup, or a booking. In A/B testing, it helps teams connect a term, metric, or behavior to a clearer optimization decision.
CRO means conversion rate optimization. It is the practice of increasing the share of visitors who take a defined action, such as a purchase, a signup, or a booking. The rate itself is conversion rate .
A conversion is the action you chose, not every click. The rate is those actions divided by the visitors who could have taken them. Optimization is how you change the page, the offer, or the path so more of those visitors complete it. Research, session review, and experiments are all part of the practice. A single A/B test can be one step inside CRO. CRO is not the test, and it is not a list of companies that sell the service.
Traffic is expensive. Raising the completion rate uses visitors you already paid to acquire. Teams that treat CRO as "change the button color" miss the definition: the action has to be named, the rate has to be the metric, and the change has to be judged against that rate. The guide covers how a program does that. This entry exists so the acronym has a short, stable meaning.
A demo page gets 10,000 visits and 200 demo requests. The conversion rate is 2%. CRO on that page means finding why the other 98% leave and testing changes that could raise the 200. It does not mean buying more visits. If the next test moves the rate to 2.3% on the same traffic, that is the optimization. How to run the program is in the guide, not here.
Name the action and the audience before you change the page. Read the rate on that pair, not on the whole site. Then use the conversion rate optimization guide for the research and the testing workflow. Keep this page as the definition of the acronym.
A common mistake is calling any traffic project CRO. More visitors do not optimize the rate. Another is using the acronym as a stand-in for hiring help. This definition is about the practice on a site you already have.
Conversion rate optimization guide: The longer guide. This glossary entry is only the definition.
No. The conversion rate is the number: completions divided by visitors. CRO is the practice of trying to raise that number, through research, page changes, and experiments. You can report a conversion rate without doing any optimization.
On the conversion rate optimization guide. This entry stops at the meaning so it does not repeat that guide. It also does not list agencies or services.
No. Fixing a broken form, speeding up a template, or rewriting a headline from research can all be CRO. An A/B test is how you know a change caused the lift when more than one thing could have. Many programs use both.
Visual editor, AI-generated variants with MidaGX, redirect testing, and GA4 integration — free forever in the Mida Sandbox. No credit card required.
Still deciding?
A quick screen share on your actual site — no slides, no generic tour. Just your questions answered.
30 min · no commitment · no sales pressure