Worked on the segmentio/segment-docs repository to deliver a focused update to the Customer.io Destination Documentation. The work centered on enhancing onboarding and integration reliability by introducing new visuals and updating API guidance, particularly around rate-limit details. Using Markdown and documentation best practices, the developer clarified the process for obtaining API credentials and provided actionable guidance on managing data ingestion rates to help users avoid throttling. No bugs were addressed during this period, as the primary emphasis was on improving documentation quality and developer experience. The update aimed to reduce integration friction and support more reliable data ingestion for customers.