Ionic architecture is a framework used for building cross-platform mobile applications. It combines web technologies like HTML, CSS, and JavaScript to create apps that can run on both iOS and Android devices. The framework provides a library of pre-built components, making it easier for developers to design user interfaces that look and feel native. At the core of Ionic architecture is the use of Angular, React, or Vue for building the app's structure and logic. This allows developers to create dynamic and responsive applications while leveraging the power of these popular JavaScript frameworks. Ionic also supports Capacitor, which enables access to native device features.