Functions, previously known as PubNub BLOCKS, enables users to execute code on data traversing the PubNub network, facilitating actions like message transformation, action triggering, and message filtering without the need for personal server infrastructure. This capability allows seamless integration of IBM Watson's cognitive APIs into applications, enhancing them with advanced features such as natural language processing, sentiment analysis, and real-time language translation. Watson's APIs offer powerful tools for developing intelligent applications without the extensive resources typically required for building and training such systems. Several use cases demonstrate the integration's potential, such as chatbots powered by the Assistant API for smart home automation, Discovery for analyzing datasets, Natural Language Understanding for sentiment assessment, Speech-to-Text and Text-to-Speech for interactive applications, and real-time Language Translator support.