This blog post demonstrates how to create an Avatar Stack using React, Flowbite, and Ably. The tutorial covers setting up a React app with Tailwind CSS, installing Flowbite and Ably, creating an authentication endpoint for generating tokens, and finally building the core App and Avatar Stack components. The resulting application allows users to see who else is in the space with them, represented by their initials or profile images, and displays a color-coded indicator of their activity status.