A/B Testing and Personalization adoption 2026
Last updated 2026-09-03
Key findings
- VWO runs on 0.8% of the 8,130 company websites crawled, the most of any A/B Testing and Personalization tool.
- VWO is most common at 51-200 employees, on 1.7% of sites in that band.
- VWO share is highest in the United States, at 1.0% of crawled sites there.
- In Artificial Intelligence (AI), VWO is the most used A/B Testing and Personalization tool, on 0.9% of crawled sites.
- In Financial Services, VWO is the most used A/B Testing and Personalization tool, on 0.7% of crawled sites.
- In Biotechnology, VWO is the most used A/B Testing and Personalization tool, on 0.2% of crawled sites.
- VWO, Google Optimize, Convert Experiences hold 85% of all A/B Testing and Personalization installs counted.
- Convert Experiences share is flat across employee bands, from 0.1% to 0.1%, a null result.
VWO runs on 0.8% of the 8,130 company websites crawled, the most of any A/B Testing and Personalization tool.
VWO was found on 69 sites. Google Optimize came second with 16. Shares are of the whole sample, and a site can run more than one tool, so the bars do not add up to 100.
VWO is most common at 51-200 employees, on 1.7% of sites in that band.
32 of the 1,881 crawled sites with 51-200 employees run VWO. At 11-50 employees the share is 0.6%.
VWO share is highest in the United States, at 1.0% of crawled sites there.
52 of the 5,384 crawled United States sites run VWO, against 0.8% across all countries. Countries with fewer than 150 crawled sites are not compared.
In Artificial Intelligence (AI), VWO is the most used A/B Testing and Personalization tool, on 0.9% of crawled sites.
1,606 crawled sites are labelled Artificial Intelligence (AI), and 14 of them run VWO. Google Optimize follows at 0.4%.
In Financial Services, VWO is the most used A/B Testing and Personalization tool, on 0.7% of crawled sites.
536 crawled sites are labelled Financial Services, and 4 of them run VWO. Convert Experiences follows at 0.2%.
In Biotechnology, VWO is the most used A/B Testing and Personalization tool, on 0.2% of crawled sites.
521 crawled sites are labelled Biotechnology, and 1 of them run VWO. Google Optimize follows at 0.0%.
VWO, Google Optimize, Convert Experiences hold 85% of all A/B Testing and Personalization installs counted.
109 installs were counted across 11 A/B Testing and Personalization tools. This chart divides by that total, so the bars add up to 100.
Convert Experiences share is flat across employee bands, from 0.1% to 0.1%, a null result.
Company size does not separate Convert Experiences adoption in this sample.
Attrition funnel
| Step | Count |
|---|---|
| Domains selected for the sample Company domains drawn from the source universe. |
30,000 |
| Homepage fetched A response was returned for the request. |
8,948 |
| Fetch succeeded A 200 response with a readable HTML body. |
8,130 |
| Firmographics joined Industry, country and employee band all present. The base every share on this site is divided by. |
8,130 |
Named failures
| Reason | Count | Share of attempted |
|---|---|---|
| HTTP 502 | 249 | 2.8% |
| HTTP 403 | 243 | 2.7% |
| Connection timeout | 205 | 2.3% |
| SSL error | 55 | 0.6% |
| HTTP 429 (rate limited) | 20 | 0.2% |
| HTTP 503 | 11 | 0.1% |
| HTTP 500 | 9 | 0.1% |
| Connect | 5 | 0.1% |
| Proxy error | 4 | 0.0% |
| HTTP 401 | 4 | 0.0% |
| HTTP 526 | 3 | 0.0% |
| HTTP 530 | 2 | 0.0% |
| HTTP 521 | 2 | 0.0% |
| HTTP 525 | 2 | 0.0% |
| Too many redirects | 2 | 0.0% |
| HTTP 523 | 1 | 0.0% |
| Http520 | 1 | 0.0% |
Cite this
VWO runs on 0.8% of the 8,130 company websites crawled, the most of any A/B Testing and Personalization tool, https://installmap.com/stats/a-b-testing-personalization, Installmap, September 2026.