Yassir Ramdani and Austin Lai from Datadog have been using SwiftUI since the company's inception, starting with prototyping and internal tools, then adopting it for small features and eventually building full products. They introduced APM Services with data visualization in 2022, which led to developing DogGraphs, an internal graphing library to bring Datadog's data visualization to iOS using native technologies like Swift and SwiftUI. The team identified performance bottlenecks, fixed them, and measured the results, optimizing the library's performance by reducing unnecessary body evaluations, batching shapes, splitting views into smaller ones, removing time-consuming processes from view bodies, eliminating dependencies not needed by views, and minimizing calls to `@Published` properties. DogGraphs is now used in several products across the Datadog mobile application and mobile widgets, providing a native, interactive data visualization experience with ease of use through a flexible API and fast rendering.