The steps involved in the cross-platform application development process include planning, designing, development, testing, and deployment. You start by identifying the target platforms and deciding on a cross-platform framework. Then, you create a detailed plan, including features, functionality, and user experience. Next, you design the user interface and architecture of the application. Development involves coding, integrating APIs, and implementing platform-specific features. Testing is crucial to ensure the app works seamlessly on different platforms. Finally, you deploy the app to the app stores or distribute it to users directly.