The tutorial guides users in building an application that allows them to capture a screenshot of their desktop, annotate it with important details from a Nexmo Conversation chatlog, and save the image in the cloud using Cloudinary. The application uses the Nexmo Conversation API for multi-channel communication and combines its functionality with the Cloudinary API for image upload and annotation. To build this app, users need to have a Vonage API account, set up their credentials, and install necessary libraries such as desktop-screenshot and Cloudinary. The app's flow involves capturing a screenshot when a user enters "screenshot" in the chatlog, annotating it with relevant information from the Nexmo Conversation API, and uploading it to Cloudinary for easy future access. This tutorial demonstrates how users can leverage both Cloudinary and Nexmo APIs to enhance their communication and collaboration tools.