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AGrowth & marketingAlso ABtestingUpdated 2 Nov 2026

A/B testing

Compare two versions of your product to see which performs better. Essential for data-driven decisions.

Definition

A/B testing is an effective way to compare two versions of a webpage or mobile app and see which one gets better results. This technique helps you determine what works best so you can optimize your content and engage more users.

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How the word shows up in a real conversation.

A software startup is developing a new productivity app for mobile devices. They have invested a lot of time and resources into the design and development of the app, and it will be ready to launch soon.

At the startup, they make an A/B testing experiment. They create two versions of the app and have slight differences in their user interface, features and functionality.

They then randomly divide their existing customer base into two groups, with one group using Version A and the other using Version B. The team closely monitors the usage and feedback from each group.

After the experiment was wrapped up, it was determined that Version B had higher engagement & adoption rate and better feedback.

Based on these results, the team decides to launch Version B of the app to the public. The A/B testing experiment allowed them to validate their design choices & make data-driven decisions and improve the overall quality of their app before launching it to the market.

Common mistake

Calling a before/after change an A/B test. If traffic was not split at the same time, you measured a season, not a variant.

India note

On India traffic, split by city and device. A Delhi desktop win can hide a tier-2 mobile loss.

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