With over 4.1 billion users across major mobile messaging platforms like Messenger, WeChat, Viber, and WhatsApp, the chat landscape is experiencing rapid growth and transformation, fueled by affordable internet connectivity and smartphones. This surge is not limited to end-user applications but extends to collaboration software and customer service channels, with many companies shifting from phone support to chat and chatbot-driven systems. As chat becomes the primary communication method across industries, service providers face significant challenges related to scaling, ensuring security and compliance, and integrating third-party services to enhance user experiences. These challenges are compounded by strict data privacy regulations such as GDPR, CCPA, and HIPAA, necessitating advanced security measures. Additionally, chat applications are expanding beyond basic messaging to support complex features like AI-driven sentiment analysis and interactive experiences, further emphasizing the need for robust integrations with third-party services. As the demand for innovative and scalable chat solutions rises, companies like PubNub are offering flexible SDKs to help businesses deliver seamless and secure chat experiences in a competitive market.