Blog

Donnu A/B Blog

Complete, honest guides on CRO, A/B testing and experimentation. The most complete articles on the web, no fluff. (page 3 of 4)

CRO

CRO for Low-Traffic Sites: How to Still Test

How to run CRO on a low-traffic site: widen your MDE, test higher in the funnel, and know when A/B testing is the wrong tool.

CRO

CRO in the Age of AI (2026): GEO and LLM Traffic

How AI Overviews, LLM chat referrals, and generative engine optimization (GEO) are changing conversion rate optimization in 2026.

CRO

Ecommerce CRO vs SaaS CRO: The Complete Playbook

Ecommerce and SaaS conversion rate optimization need different funnels, metrics, and test sizing. A practical playbook for both.

CRO

Good / Average Conversion Rate: 2026 Benchmarks by Industry

What counts as a good or average conversion rate in 2026, with hedged ecommerce and SaaS ranges by category, stage, and traffic source.

Tools

CRO Tools Compared: A Neutral Guide by Category (2026)

A neutral guide to the best CRO tools: analytics, heatmaps, and A/B testing platforms compared by criteria, not marketing.

A/B Testing

How to Write an A/B Test Hypothesis (with a Free Template)

Learn how to write a strong A/B test hypothesis with a free template, worked examples, and a sample size calculator to size it right.

A/B Testing

Common A/B Testing Mistakes & Validity Threats

Six A/B testing mistakes that quietly invalidate results: peeking, SRM, novelty effects, Simpson's Paradox, plus the warning sign and fix for each.

Statistics

Bayesian A/B Testing: The Complete Guide (vs Frequentist)

Bayesian A/B testing explained: priors, posteriors, P(B beats A), expected loss, a worked example, and when to choose it over frequentist testing.

CRO

Conversion Rate Optimization (CRO): The Complete 2026 Guide

Conversion rate optimization explained: formulas, benchmarks, a full process, prioritization frameworks, and live calculators for ecommerce and SaaS.