This report provides a comprehensive overview of web application development, covering key concepts, server-side and client-side technologies, and security techniques. It begins by defining web-based applications and evaluating their functionality, highlighting advantages such as cost-effectiveness, accessibility, and ease of customization. The report then compares various server-side scripting languages like PHP, Python, Ruby, C#, C++, Java, and Erlang, alongside client-side technologies like HTML, CSS, and JavaScript, demonstrating their respective roles in solving web development problems. Furthermore, it addresses web security techniques, emphasizing the importance of updates, strong passwords, SSL encryption, secure web hosting, and proper file management to protect data. The report concludes by synthesizing client-side and server-side technologies into a complete system architectural design, detailing the responsibilities of both the client and server in creating a functional web application. Desklib provides access to this and many other solved assignments and past papers for students.