Real-time data has become essential for creating engaging user experiences, particularly in competitive industries such as a bustling cupcake business in NYC, which can benefit from instant location visibility and customer engagement to build trust and loyalty. This article discusses the use of three modern technologies—Redpanda Serverless, Pusher, and Vercel—to develop a compelling real-time frontend application that facilitates this engagement by allowing instant updates and interactions. Redpanda Serverless is highlighted for its ability to eliminate infrastructure overhead and simplify scalability, making it ideal for small projects and startups, while Pusher enables the creation of real-time channels between server and client, bypassing the complexities of using WebSocket directly. Vercel is praised for its seamless integration with Git repositories, allowing effortless deployments and updates. The example application demonstrates a real-time cupcake inventory map using LeafletJS, showcasing how these technologies can work together to keep customers updated with live inventory changes without the traditional challenges of real-time data handling.