Discogs, a platform for music enthusiasts and record collectors, sought to enhance its notification system to improve user interactions and support its global marketplace. Previously reliant on a monolithic Python application, Discogs transitioned to Knock for its notification infrastructure, enabling rapid deployment of cross-channel notifications, including email and in-app alerts. This shift allowed Discogs to manage notifications more efficiently, supporting advanced localization and observability features that improved both customer service and user engagement. By integrating Knock, Discogs could deliver over 48.5 million notifications monthly, enhancing the experience for collectors and sellers by ensuring timely updates on merchandise availability and facilitating global transactions. The collaboration with Knock also laid the groundwork for future expansions, such as mobile notifications and automated localization, further increasing the company's ability to provide agile and comprehensive product experiences across multiple channels.