Full-stack development is the comprehensive process of creating and managing both the frontend (client-side) and backend (server-side) of a web application. On the frontend, developers focus on building user interfaces, ensuring responsive design, accessibility, and seamless user experiences using technologies like HTML, CSS, JavaScript, and modern frameworks such as React, Angular, or Vue. On the backend, developers handle server logic, application architecture, and data management using languages and frameworks like Node.js, Express, Django, or Spring Boot, while also integrating databases such as MySQL, PostgreSQL, or MongoDB. Full-stack development also involves working with APIs, authentication, cloud services, and deployment tools, ensuring that applications are secure, scalable, and performant. By bridging both sides of development, full-stack developers are capable of delivering complete end-to-end solutions, from initial design and coding to testing, deployment, and maintenance.