Danielle Cardona worked on the turingschool/tracker-crm repository, focusing on backend development and API configuration using Ruby. During the month, she addressed a critical integration issue by updating the CORS configuration to whitelist the deployed Heroku-hosted frontend, restoring reliable cross-origin communication between the frontend and backend. This fix resolved persistent console errors and re-enabled essential CRM workflows for users. Danielle validated the solution in the production environment, ensuring that the system’s user experience returned to expected standards. Her work demonstrated a targeted approach to infrastructure reliability, though the scope was limited to a single, high-impact bug fix during this period.