Optimizely: What It Is and How It Affects Your Privacy
Understand Optimizely, an A/B testing platform that tracks users, and why privacy blockers target it.
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What is Optimizely?
Optimizely is an American company that provides a digital experience platform as a service. Its products include A/B testing, multivariate testing, website personalization, and feature management, as well as content management and digital commerce. In 2020, it was acquired by Episerver, which later adopted the Optimizely name for the combined company.
Who operates the domain?
The domain is operated by Optimizely, Inc., headquartered in the United States. Founded in 2010 by ex-Google employees, the company went through several funding rounds with major investors like Benchmark and Andreessen Horowitz. In 2020, it was acquired by Episerver but has kept the Optimizely branding since 2021.
What does Optimizely do with browsing data?
Optimizely provides experimentation and personalization tools. When a website uses its scripts, Optimizely collects data about user behavior, such as clicks, page views, conversions, and other interactions. This data is used to run A/B tests, personalize content, and optimize user experience. This involves tracking, typically via cookies and JavaScript.
Why do privacy blockers block Optimizely?
Privacy tools often block Optimizely’s domain or scripts for several reasons:
- Tracking: Optimizely collects behavioral data, which is considered tracking by many privacy-conscious users. This may include personal or identifiable information.
- Third-party cookies: Typically, Optimizely’s script is loaded from a different domain than the site you’re visiting, setting third-party cookies, which are common targets for blockers.
- Consent: Many blockers assume no explicit consent has been given for such tracking, especially under laws like GDPR or CCPA.
- Lack of control: Users have no visibility into how their data is used or how long it’s retained.
Limitations of DNS blocking
It’s important to note that simply blocking the Optimizely domain via DNS (e.g., adding it to a blocklist) does not remove ads or tracking served from the same origin as the content. Also, it does not hide your IP, as the connection to the site remains direct. Blocking may break functionality of sites that depend heavily on Optimizely, causing errors or non-personalized content.
Final considerations
For increased privacy, you can use browser extensions that block tracking scripts or adjust cookie settings. DNS blocking is an additional layer but not comprehensive. For more effective protection, combine methods and stay informed about tracking practices.
Note: This article is informational and does not substitute professional technical advice.