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 6 of 17)

CRO

AI Personalization and A/B Testing: How They Work Together

Guide to AI personalization and A/B testing: why one does not replace the other, how to measure with a global holdout and what it really costs in traffic.

CRO

Experimentation Velocity: How to Calculate Yours (Template)

Free template to calculate experimentation velocity: statistical ceiling, real cycle time, utilization and the four numbers that actually matter.

CRO

Average A/B Test Win Rate: What the Data Shows

The average A/B test win rate in published data runs from 8 to 33 percent, why the range is that wide, and why a high win rate is usually a warning sign.

CRO

CRO Team Size Benchmarks by Company Size

What the published data really says about CRO team size, why no headcount benchmark by company size exists, and how to size a team from your own traffic.

Tools

Unbounce Review 2026: Features, Pricing, and Fit

Unbounce review 2026: real pricing per tier, which plan unlocks A/B testing, what Smart Traffic is and is not, and the traffic cap that decides your test.

Tools

Kameleoon Review 2026: Features, Pricing, and Fit

Kameleoon review 2026: published entry price, the 50,000 tested-user cap, three selectable statistical methods, and what only Enterprise unlocks.

Tools

PostHog Review 2026: Features, Pricing, and Real Costs

PostHog review 2026: per-product free allowances, usage-based pricing, experiments billed with feature flags, and what self-hosting really gives you.

Tools

Statsig Review 2026: Features, Pricing, and Ownership

Statsig review 2026: published per-event pricing, a genuinely usable free tier, unlimited flag checks, and what the OpenAI and Amplitude news means.

Tools

AB Tasty Review 2026: Features, Pricing, Who It Is For

An AB Tasty review for 2026: what the platform does, what can honestly be said about pricing, how to read its win probability, and the segmentation trap.