What is A/B Testing?
A method of comparing two versions of a webpage or app against each other to determine which performs better. By randomly showing different variants to users, organisations can make data-driven decisions about design changes, ensuring improvements are statistically significant rather than based on guesswork.
A/B Testing,
explained properly.
Not a flashcard answer — the working meaning, where you'll meet it, and why professionals who use it precisely get taken more seriously.
A method of comparing two versions of a webpage or app against each other to determine which performs better. By randomly showing different variants to users, organisations can make data-driven decisions about design changes, ensuring improvements are statistically significant rather than based on guesswork.
Understanding A/B Testing on paper is one thing — using it confidently at work is another. In professional settings, this is the kind of term that separates people who talk about Conversion Rate Optimisation from people who are trusted to make decisions in it. Recruiters and managers listen for it in interviews, and colleagues notice immediately whether you use it precisely or vaguely.
At OnlineUni, A/B Testing is taught inside the module “Foundations of Conversion Rate Optimisation” of Certificate in Conversion Rate Optimisation, where it is placed in its full working context — applied to real Conversion Rate Optimisation scenarios, not memorised in isolation.
Indicative index of skill mentions in professional job postings (2019 = 1)
What mastering it
is worth.
Learning terms one definition at a time builds vocabulary. Completing the programme builds what employers pay for: certified capability.
Certified professionals are promoted faster, shortlisted more often and paid a documented premium over equally experienced but uncertified colleagues — and the premium compounds with seniority, so the earlier you certify, the longer it pays.
Fluency, not flashcards
A/B Testing and every related concept taught in working context, so you can use them under pressure.
A verifiable credential
A shareable digital certificate in Conversion Rate Optimisation for LinkedIn and your CV the day you pass.
Salary leverage
Certified Conversion Rate Optimisation capability is exactly what the uplift figures here are paid for.
Momentum
Self-paced, online, from £79 — most learners finish their first certificate within two months.
Indicative ranges from published continuing-education salary studies, by career stage
Certificate in Conversion Rate Optimisation
A self-paced online Certificate programme with 3 modules, an online assessment and a verifiable digital certificate you can share on LinkedIn the day you pass.
- 3,335 professionals enrolled
- 4.8★ learner rating
- Study from anywhere · no fixed timetable
- Fast-track option: finish in as few as 20 days
More terms from
this glossary.
Every term below is taught inside the same programme — read them all free, then study them properly.
Stop looking terms up. Start being the one who explains them.
Certificate in Conversion Rate Optimisation covers A/B Testing and everything around it — from £79, entirely online.