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A/B testing

Optimizely market share on brand websites

Optimizely runs on 2.8% of brand websites in our sample (38 of 1,359). Market share by country, top sites using it and technologies it is paired with.

2.8%
Share in UK brands
38 / 1,359
0
sites in Tranco top 1K
5 in top 10K
#32,303
median Tranco rank
Tranco
16
frequent companions
Google Tag Manager

By market

  1. UK brands2.8%38
  2. United Kingdom0.5%54
  3. Global0.6%436

Trend

Often used with

  1. Google Tag ManagerTag managers71%
  2. ReactWeb frameworks45%×2.4
  3. Next.jsWeb frameworks37%×2.5
  4. CloudflareCDN34%
  5. OneTrustCookie consent (CMP)34%
  6. AkamaiCDN32%×2.5
  7. Akamai Bot ManagerSecurity & bot protection29%×2.7
  8. BootstrapCSS frameworks29%
  9. jQueryJavaScript libraries21%
  10. Tailwind CSSCSS frameworks18%

Top sites using Optimizely All 38 sites

TrancoSiteAlso usesHosting
1,867sky.com Adobe Experience Platform TagsAkamai Bot ManagerAkamaiGoogle Cloud CDN / GFEGoogle Tag ManagerNext.js Bskyb Broadband As
3,898routledge.com BootstrapCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsFont AwesomeGoogle Fonts Cloudflare
4,649channel4.com Akamai Bot ManagerAkamai Amazon Web Services
4,962marksandspencer.com Akamai Bot ManagerAkamaiAzure Front Door / CDNContentfulNext.jsReact Akamai
6,095diy.com Amazon CloudFrontTailwind CSSTealium iQTrustArcUniversal Analytics (legacy)Zendesk Bt Uk As Btnet Uk Regional N...
10,449equifax.com Bootstrap 4.6.2CloudflareEnvoyFont AwesomeGoogle Cloud CDN / GFEGoogle Tag Manager Cloudflare
13,917virginmediao2.co.uk Google Cloud CDN / GFEGoogle Tag ManagerNext.jsReactSpeedCurve LUXStoryblok Google Cloud
14,370klm.com Akamai Bot ManagerAkamaiAngularGoogle Tag Managernginx Akamai
15,229vans.com AdyenAkamai Bot ManagerAkamaiApple Pay JSBazaarvoiceBloomreach Akamai
19,541o2.co.uk Azure Front Door / CDNGoogle Cloud CDN / GFEGoogle Tag ManagerNext.jsReactSpeedCurve LUX Microsoft Azure
20,136burberry.com Google Tag ManagerNew RelicNext.jsReactwebpack Akamai
26,425leica-camera.com CalendlyAmazon CloudFrontDrupalGoogle Tag ManagerOneTrustTailwind CSS Amazon Web Services
30,134airfrance.com Akamai Bot ManagerAkamaiAngularGoogle Tag Managernginx Akamai
34,472confused.com CloudflareCloudflare Bot ManagementCloudflare Web AnalyticsjQuery 3.6.0Sitecore Cloudflare
45,821nescafe.com AcquiaAkamaiBazaarvoiceBootstrapDrupal 11Google Tag Manager Fastly
46,398glossier.com CloudflareGorgiashCaptchaKlaviyoOneTrustGoogle reCAPTCHA Cloudflare
49,176eurocarparts.com AlgoliaAmazon CloudFrontContentfulEnvoyGoogle Tag ManagerNext.js Securityservices
49,823game.co.uk Akamai Bot ManagerAkamaiAlgoliaBootstrapGoogle Tag ManagerjQuery Akamai
52,652evanscycles.com Akamai Bot ManagerAkamaiBootstrapGoogle Tag ManagerNext.jsOneTrust Akamai
55,532jcb.com Azure App ServiceCloudflareGoogle Tag ManagerOneTrust Episerver As
61,202freshfields.com CloudflareGoogle Tag ManagerNext.jsReactTailwind CSS Episerver As
70,750furniturevillage.co.uk BazaarvoiceBootstrapCloudflareCloudflare Web AnalyticsGoogle Marketing Platform (DV360/CM360)Google Tag Manager Amazon Web Services
76,995ajbell.co.uk BootstrapAmazon CloudFrontDrupalEnvoyFont AwesomeGoogle Tag Manager Amazon Web Services
226,057claridges.co.uk Azure Front Door / CDNNext.jsOneTrustReactTailwind CSS Episerver As
321,273redrow.co.uk ASP.NETBootstrapGoogle Tag ManagerImperva (Incapsula)OneTrustGoogle reCAPTCHA Imperva

Our crawler: 1,359 sites · UK brands · updated 23 Oct 2026 · Methodology

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