A/B testing on public-sector websites
A/B testing is a method in which two versions of the same page or element are compared in order to determine which one better helps achieve a specific goal. Usually only one detail is changed: the button text, the heading, the layout of form fields, the sequence of registration steps or even the way information is presented. One version, A, is shown to one group of visitors, and version B to another, and later it is assessed which version prompted more desired actions.
This method is especially useful when decisions are to be based not on opinion, but on real user behaviour. In the public sector, this is relevant for websites of municipalities, schools, museums, libraries and other organisations, where it is important not only to have an attractive appearance, but also clear, convenient content that residents can understand. A/B testing helps to understand how people use digital services and where they encounter uncertainty.
What can be tested?
A/B testing does not necessarily mean major website overhauls. Often the greatest benefit comes from small but precisely defined changes that help the visitor find information or complete an action more quickly.
- Button text and appearance. For example, you can compare whether a clearer button says “Register for a visit” or “Book a time”. On public-sector websites it is important that button wording is simple, unambiguous and understandable to different groups of residents.
- Headings and information presentation. Sometimes even a clearer heading can increase the visibility of important information. This is especially relevant on school admissions, municipal social support or library registration pages.
- Form structure. You can check whether a shorter form works better than a longer one, or whether users find it easier when fields are split into steps. This is important for e-services, where residents fill in applications, register or submit documents.
- Content layout. In one version, the most important information may be placed at the top of the page; in another, it may be divided into blocks. Such tests help determine how visitors find the information they need more quickly.
Why is this important for the public sector?
Public-sector websites often have to serve very different users: young people, seniors, people with disabilities, residents who rarely use digital tools. As a result, decisions that seem logical to the internal team are not always the most convenient for real visitors. A/B testing makes it possible to check this in practice.
For example, on a municipality website you can test how to present information about benefits or service registration more clearly. On a school website, you can test how to show admissions procedures or lesson timetables more simply. Museums and libraries can check which event registration form or ticket information structure is more convenient for visitors.
How does A/B testing work?
First, you need to define the goal clearly. This may be a higher number of completed forms, more clicks on an important button, a lower bounce rate or faster information discovery. Without a clear goal, testing becomes just a technical experiment that does not deliver real value.
Next, one specific change is chosen. It is important not to change several things at once, because then it becomes unclear which change caused the result. Once enough data has been collected, it is assessed which version worked better, and only then is the decision made to roll out the change across the entire website.
Accessibility and compliance
On public-sector websites, A/B testing must be carried out responsibly. Tested solutions must not worsen accessibility for people with disabilities, so it is necessary to ensure that both versions meet the basic accessibility principles: sufficient colour contrast, clear headings, keyboard navigation, understandable button labels and compatibility with assistive technologies.
It is also important to assess GDPR requirements. If analytics tools are used for testing, it must be clear what data are collected, for what purpose they are processed and whether user consent is required for this. In the public sector, transparency is especially important, so it is recommended to collect only as much data as is necessary to achieve the testing objective.
When is A/B testing most useful?
A/B testing works best when a website has a clear user journey and a specific action that needs improvement. This may be registration, submitting an application, subscribing to a newsletter, booking an event or viewing important information. If the goal is not defined, it will be difficult to interpret the results.
In the public sector, this method helps create not only more modern but also more convenient digital services for residents. Instead of guessing, you can rely on real usage, which makes it possible to improve website quality, clarity and efficiency consistently. Used properly, A/B testing becomes a practical tool that helps organisations serve the public better in the digital space.