Observability is a crucial aspect of product development, allowing teams to understand the user experience and identify areas for improvement. Sentry error monitoring provides a starting point for observability, but it can be challenging to reproduce errors in context. SessionStack adds an additional layer of observability by visually recreating errors, enabling teams to see what users see and understand the problem in action. By integrating SessionStack with Sentry, Onvey was able to reduce developer cycles spent on reproducing highly context-specific errors and increase speed to resolution, ultimately improving both user experience and engineer productivity.