CloudFiles is a SaaS platform that allows users to access and manage their existing document libraries from various sources, including Google Drive, OneDrive, SharePoint, Box, and Dropbox. It offers features such as file sync, document security, file viewer interactivity, page-wise analytics, and document automations. Users can also add security settings, white-labeling, and chatbots to their documents, as well as collect detailed analytics and use them in workflows and lists to create lead segmentation and scoring mechanisms in HubSpot and Salesforce.