Medium

Medium is an online publishing platform that enables individuals to read, write, and share long-form content. It offers tools for content creation, community engagement, and monetization through a membership model, providing a personalized reading experience across various devices.

The candidate, Medium, is explicitly described as an online publishing platform that allows users to read and write stories. The website content directly mentions features such as exploring millions of ad-free stories, highlighting passages, bookmarking, following writers and publications, personalized recommendations, connecting with a community through claps and comments, listening to audio versions, opting into newsletters, publishing stories, joining the Medium Partner Program to earn money, and becoming a member for unlimited access. These features directly align with all the 'must-have' and 'other' features provided in the list, including a rich text editor (implied by 'publish your own stories'), distribution and recommendation engine, membership monetization, reader engagement metrics, community feedback tools, publication management, user profiles and following, tags and topics, email newsletter integration, audio story playback, mobile app access, and social sharing and embedding (implied by the nature of an online publishing platform).