Full Stack Development Company involves building both the front-end (client side) and back-end (server side) of web applications. Front-end focuses on user interface and experience using HTML, CSS, and JavaScript frameworks like React or Angular. Back-end handles databases, servers, and application logic using languages such as Node.js, Python, or PHP. Full stack developers are skilled in managing the complete development process, making them valuable assets in tech teams. They ensure smooth integration between the user interface and data management systems.