Medium consists of a community where you can post and read articles written by others on the network. There are writers from beginners to professionals.
Functions:
The user can read and post articles and follow authors of interest to receive notifications about new publications. Basically, it's a social network where the members can publicize their ideas.
How to use:
Select the topics that interest you so the articles displayed on your home screen will be more relevant. To publish an article, simply tap the X in the upper right corner.