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A web system, often referred to as a web-based system or web application, is a software system that is accessed over the internet using a web browser. It typically consists of a client-side interface, a server-side application, and a database. The client-side interface is usually written in HTML, CSS, and JavaScript, while the server-side application can be written in various programming languages such as Python, Java, PHP, or Ruby. The database stores and manages the data used by the web system.

Web systems can be used for a wide range of purposes, including e-commerce, social networking, content management, and enterprise resource planning. They are often designed to be scalable, meaning they can handle a large number of users and transactions simultaneously. This is achieved through the use of load balancing, caching, and other techniques.

One of the key advantages of web systems is their accessibility. They can be accessed from anywhere with an internet connection, making them a convenient and flexible solution for many businesses and organizations. Additionally, web systems can be updated and maintained more easily than traditional desktop applications, as they do not require users to install software updates.

However, web systems also have some limitations. They can be slower than desktop applications, especially when accessing large amounts of data. They also require a reliable internet connection to function properly. Additionally, web systems can be vulnerable to security threats such as hacking and data breaches, so it is important to implement proper security measures to protect sensitive information.

In summary, a web system is a software system that is accessed over the internet using a web browser. It consists of a client-side interface, a server-side application, and a database. Web systems are scalable, accessible, and easy to update, but they also have some limitations and require proper security measures.