In web application development, there are several technologies commonly used to build robust and interactive applications. Some of the key technologies include HTML, CSS, JavaScript, and backend languages like Java, Python, or PHP. These technologies work together to create a seamless user experience and ensure the application’s functionality. Additionally, frameworks such as React, Angular, or Vue.js are often used to simplify the development process and enhance the application’s performance. Databases like MySQL, MongoDB, or PostgreSQL are used to store and retrieve data, while version control systems like Git help in managing code changes. APIs, such as RESTful or GraphQL, enable communication with external services. It’s important for web developers to stay updated with the latest technologies to ensure they deliver high-quality applications.