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Design an A/B Testing System (like Optimizely)
📕 Here are some good solutions we found for this question:

No good solutions for this online. Here are a few reads:

Good design: https://chuan-zhang.medium.com/building-a-trustworthy-a-b-testing-platform-practical-guide-and-an-architecture-demonstration-332446724ba0

High level overview: https://xhinliang.medium.com/how-to-design-an-a-b-test-system-1450b06933f

Building a small homemade A/B test engine: https://medium.com/studocu-techblog/recipe-for-implementing-a-homemade-a-b-testing-engine-2e95c97c8020

🙋 Here are some details you should know about this question:

How will you store and retrieve different treatment UI?

How will you measure the success metrics for each treatment?

How will you assign a treatment to a user and maintain it for that user across sessions?

How will the company admin see the treatments?

How will you store the information for the tests? Or, how will you structure the database?

How will you easily turn the test on and off?

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