What Is the Difference Between Client/Server Application and Web Application?


Larry Thompson

Client/Server applications and web applications are two different types of software architectures that are used to build and deploy applications. While both types of applications serve the purpose of delivering functionality to end-users, they have distinct differences in terms of their structure, deployment, and interaction with users.


A client/server application is a distributed computing model where tasks or workloads are divided between clients and servers. In this architecture, clients request resources or services from servers, which then process the requests and send back the results. The communication between the client and server typically occurs over a network.

A web application, on the other hand, is a software application that runs on a web server and is accessed by users through a web browser. Web applications use HTTP as the communication protocol between the client (web browser) and the server (web server).


In a client/server application, the software is divided into two main components: the client-side and the server-side. The client-side code runs on the user’s device (such as a computer or mobile device) and is responsible for presenting the user interface and handling user interactions. The server-side code runs on one or more dedicated servers and handles tasks such as data processing, storage, security, and business logic.

In contrast, a web application has a three-tier architecture consisting of a presentation layer (client-side), an application layer (server-side), and a data layer (database). The presentation layer handles user interactions through HTML, CSS, JavaScript, etc., while the application layer processes requests from clients and generates dynamic content using server-side technologies like PHP, ASP.NET, or Node.js. The data layer manages data storage in databases such as MySQL or MongoDB.


Client/server applications are typically installed and run on individual devices, requiring separate installations and updates for both the client-side and server-side components. These applications can be designed to run on various operating systems, such as Windows, macOS, or Linux.

Web applications, on the other hand, are centrally deployed on web servers accessible through the internet. Users can access web applications using a web browser without the need for installation or updates on their local devices. This makes web applications more platform-independent and easier to maintain and update.

User Interaction

Client/server applications often provide a richer user experience with more control over the user interface. They can take advantage of device-specific features and capabilities like accessing local resources (file system), utilizing hardware (printers), or providing offline capabilities. The client-side code interacts directly with the underlying operating system to perform these tasks.

In contrast, web applications run within the confines of a web browser sandbox and have limited access to device-specific features. They rely on web standards like HTML, CSS, and JavaScript for user interaction. However, advancements in browser technologies have enabled web applications to offer more interactive experiences through APIs like geolocation, camera access, and offline storage.


In summary, client/server applications and web applications differ in terms of their structure, deployment model, and user interaction capabilities. Client/server architecture allows for more control over device-specific features but requires separate installations on client devices.

Web application architecture provides platform independence but has limitations in accessing local resources. Understanding these differences is crucial when choosing the right architecture for your software project based on your requirements.

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