Case Study: Pantheon improves load times and accelerates bug resolution with Replay.io

Pantheon solves performance bottlenecks improving load time by 5x

Pantheon, a WebOps platform, experienced significant performance bottlenecks and debugging challenges as they rapidly scaled their engineering team. Their new dashboard had a slow load time of 10-12 seconds, and the complexity of their legacy codebase made it difficult to identify the root causes of these issues. To address these problems, they turned to the vendor Replay.io and adopted its Replay product to gain a deeper understanding of their performance drags and bugs.

By implementing Replay.io, Pantheon’s leadership and engineers could visually reproduce bugs and performance issues, leading to a clear, shared understanding of the problems. This enabled them to reprioritize their development roadmap and directly address the core bottlenecks. As a result, Pantheon improved its dashboard load time by 500%, reducing it from 10-12 seconds to an average of 2 seconds. Replay.io also significantly accelerated bug resolution and reduced the onboarding time for new engineers, allowing them to contribute to fixes within days.

Pantheon