Worked on Expensify/App to enhance observability documentation, focusing on clarifying how the emailDomainFilter operates within telemetry processing. The update involved revising Markdown-based guides to better align with current telemetry practices, aiming to reduce ambiguity for developers and ensure consistent documentation across the repository. By updating contributingGuides/OBSERVABILITY.md, the work streamlined onboarding and provided clearer contributor guidance for observability-related changes. The technical approach emphasized precise technical writing and documentation skills, leveraging Markdown to present complex telemetry concepts in an accessible manner. This effort improved the overall quality and maintainability of observability documentation for both new and existing contributors.