Coding and development are central stages in application development, where developers write the code that brings the design and functionality to life. Depending on the platform and requirements, developers may use a variety of programming languages, frameworks, and tools to build the application. Throughout the development process, rigorous testing is conducted to identify and resolve any bugs, errors, or compatibility issues. Once the application is thoroughly tested and refined, it is deployed for users to download, access via the web, or integrate into their existing systems, marking the culmination of the application development journey.