# Which Companies Run The Most Detected A/B Tests Across Page Areas?

Source: Lazyweb Research
Published: 2026-07-07
Sample size: n=1126
Tags: experiments, saas, monetization, mobile, web
HTML: https://www.lazyweb.com/research/which-companies-run-the-most-ab-tests
Markdown: https://www.lazyweb.com/research/which-companies-run-the-most-ab-tests.md

**Answer.** Across 1,126 area-annotated experiments tracked by Lazyweb Research, the most-tested companies are Workday (32 annotated experiments), Navan (24), and a cluster tied at 22 — Memrise, YouTube Music, and Slack [1]. Testing volume is spread across 362 companies with at least one detected experiment, so even the top testers are a small share of the total [1][2]. The leaderboard skews toward enterprise SaaS and subscription apps [1].

> Workday leads all tracked companies with 32 detected experiments, ahead of Navan (24) and a three-way tie at 22 (Memrise, YouTube Music, Slack) — Lazyweb Research, July 2026.

## The finding: a long tail with an enterprise-heavy head

Detected experiments span 362 distinct companies (out of ~809 tracked apps) [2]. The most-tested by annotated-experiment count are Workday (32), Navan (24), then Memrise, YouTube Music, and Slack (22 each), Microsoft-auth (20), Apple Music (19), and Audible (18) [1]. The head of the list mixes enterprise SaaS (Workday, Navan, Slack, GitHub) with subscription consumer apps (music, learning) [1].

## Top testing companies

By distinct annotated experiments [1]:

| Company | Annotated experiments |
|---------|----------------------|
| Workday | 32 |
| Navan | 24 |
| Memrise | 22 |
| YouTube Music | 22 |
| Slack | 22 |
| Microsoft-auth | 20 |
| Apple Music | 19 |
| Audible | 18 |
| ChatGPT | 17 |
| Plantin | 15 |

Workday and Navan alone account for the entire 5-company 'business' category cut, which is why that vertical is flagged as concentrated [1][3].

## How to apply it

Use the leaderboard to pick peers worth studying closely: if you're B2B SaaS, Workday, Navan, Slack, and GitHub are the highest-volume testers to benchmark against [1]. For consumer subscriptions, the music and learning apps (YouTube Music, Apple Music, Memrise) show the most detected activity [1]. High test volume signals an active experimentation culture worth learning from — but volume alone doesn't mean their changes won [1].

## Caveats

Counts are detected before/after experiments observed by Lazyweb Research, not the company's full internal test program — apps tested more heavily on tracked surfaces rank higher [4]. 362 companies have at least one experiment, so top testers are still a thin slice [2]. Company concentration distorts small category cuts (e.g. business) [3].

## The numbers

| Stat | Computed from |
| --- | --- |
| Top testers by annotated experiments: Workday 32, Navan 24, Memrise 22, YouTube Music 22, Slack 22, Microsoft-auth 20, Apple Music 19, Audible 18, ChatGPT 17, Plantin 15 | top_testing_companies |
| 362 distinct companies have at least one detected experiment, out of ~809 tracked apps | companies_with_experiments |
| Workday and Navan dominate the 5-company business category | smallSampleWarnings; top_testing_companies |
| Counts are detected before/after experiments observed in the corpus, not internal test programs | universe |

## Methodology

Universe is companies ranked by distinct annotated experiments within 1,126 annotated experiments over 4,814 detected experiments across 362 companies in the ~800 tracked-apps corpus. Counts are LLM-detected before/after diffs on tracked surfaces, July 2026, not internal test programs.

## Sources & citations

- [1] Lazyweb Research analysis of top testing companies (~800 tracked apps), July 2026. Companies ranked by distinct annotated experiments within 1,126 annotated experiments.
- [2] Lazyweb Research analysis of 362 companies with detected experiments (~800 tracked apps), July 2026. Distinct companies with >=1 detected experiment out of ~809 tracked apps.
- [3] Lazyweb Research analysis of category concentration (~800 tracked apps), July 2026. Business category is Workday/Navan-dominated.
- [4] Lazyweb Research analysis of 4,814 detected experiments (~800 tracked apps), July 2026. Detected experiments are observations on tracked surfaces, not internal test logs.

## Related questions

- [What Page Areas Are B2B / Business Companies A/B Testing?](https://www.lazyweb.com/research/what-business-companies-ab-test-page-area)
- [Which Page Areas Look Highest-Impact In Detected A/B Tests?](https://www.lazyweb.com/research/which-page-areas-highest-impact-experiments)
- [Web Vs Mobile: Which Page Areas Do Companies A/B Test On Each?](https://www.lazyweb.com/research/web-vs-mobile-which-page-areas-get-tested)