Progressive Web App (PWA): A Progressive Web App is a type of web application that combines the best features of both traditional websites and native mobile applications. PWAs are designed to be fast, reliable, and engaging for users, making them accessible even with poor internet connections or offline. They can be installed on users' devices, allowing them to receive push notifications and access the app directly from the home screen without needing to download it from an app store. PWAs offer businesses an efficient and cost-effective way to deliver a seamless user experience across different devices and platforms.