This document discusses online platforms that can be used as tools for developing ICT content. It defines online platforms as technologies that are grouped to be used as a base for building other applications. Some examples of online platforms discussed include social media platforms like Facebook and Instagram, blogging platforms like WordPress, and presentation tools like Prezi. Other platforms mentioned are cloud computing services, file management tools, website builders, and mapping tools. The document also covers basic principles of web design such as purpose, communication, typography, colors, navigation, images, layout, and load time.