Content creation is the contribution of information to any media and most especially to digital media for an end-user/audience in specific contexts.
While web development typically refers to web markup and coding, website development includes all related development tasks, such as client-side scripting, server-side scripting, server and network security configuration, eCommerce development, and content management system (CMS) development.
The content is an essential part of an Android app. Content is the basic element of the app that is viewed and read by the users of the app. With the rapidly progressing Android development industry, if you are going to create an Android app, you should focus on creating an app that contains meaningful content.
SEO means Search Engine Optimization and is the process used to optimize a website's technical configuration, content relevance and link popularity so its pages can become easily findable, more relevant and popular towards user search queries, and as a consequence, search engines rank them better.