PubNub Functions is a serverless, edge-processing tool designed for developers building event-driven, real-time applications, enabling in-stream data manipulation without the need for infrastructure maintenance. It allows for the integration of business logic directly within the PubNub network, facilitating tasks such as data filtering, content moderation, and message enrichment through synchronous and asynchronous processing. The latest version introduces features like versioning, rolling updates, and public APIs, enhancing the developer experience by eliminating downtime and providing seamless management of functions. PubNub Functions stands out by offering low-latency processing and eliminating the need for external services, unlike competitors that rely on third-party integrations. This tool optimizes data handling, reduces operational risks, and supports real-time features like moderation and translation, ensuring responsive user interactions. The platform provides pre-built integrations, robust logging, and a debug console, streamlining application development and accelerating time-to-market for developers.