The sizing results inform the feature specifications (“specs”) that our product managers prepare before introducing new work to their engineering teams. To evaluate whether to build any new feature, we pass the proposed experiment through a phase called sizing that uses data to parameterize the problem space and assess its estimated impact.
We hypothesized that because mobile devices have limited screen space, the proposed sticky button would have the strongest impact there. Profile pages appear on Zocdoc across all platforms, but we decided to tackle the mobile web platform first. It’s a common feature of many other websites. A sticky button, also known as a fixed or frozen button, stays in place while users move around the page. Our product team had an intuition that by adding a sticky button with a Book Appointment prompt, we could drive more users to get the care they need from the profile page.
Our user research showed patients appreciated the level of detail but sometimes missed that they could actually book an appointment with the provider. On provider profile pages, Zocdoc displays a wide variety of helpful information (such as the doctor’s location, availability, and rating) so patients can make informed decisions about their choice of care.
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