Make more of the traffic you already have by understanding what works, testing what doesn’t and improving the customer experience.

What it is

CRO is about understanding how people use your website or digital experience, finding opportunities to improve it and testing those changes before rolling them out.

It combines customer behaviour and research with A/B, multivariate and server-side testing to understand what genuinely improves outcomes.

Good CRO also depends on good measurement. Experiments need reliable data, meaningful success metrics and enough evidence to know whether a change is actually working.

Why it matters

Driving more traffic is only one way to improve marketing performance. Improving how existing traffic converts can often deliver greater commercial value without increasing media investment.

As customer journeys become more complex and marketing becomes increasingly automated, experimentation provides an independent way to validate changes before they’re scaled across digital experiences.

A structured CRO programme helps organisations make better product, marketing and customer experience decisions based on evidence rather than opinion.

What Louder does

  • Analyse customer behaviour using quantitative and qualitative research.
  • Prioritise experimentation opportunities based on business impact.
  • Design and implement A/B, multivariate and server-side experiments.
  • Measure results using robust statistical methods and integrated measurement.
  • Roll successful changes into production and build an ongoing experimentation programme.

Common challenges

  • Testing without enough data - Experiments lack the traffic or statistical confidence - needed to produce reliable results.
  • Optimising the wrong things - Teams focus on small changes rather than opportunities with meaningful customer or business impact.
  • Unreliable measurement - Tracking gaps and poorly defined success metrics make results difficult to trust.
  • Not acting on learnings - Successful changes aren’t rolled out and insights from previous experiments get lost.

See also: Automation & alerting | Marketing data warehouses | Internal dashboards & tools | QA & governance tooling | Personalisation | Conversion Rate Optimisation (CRO)