Google Drive is a cloud storage and file synchronization service developed by Google that offers 15 GB of free storage. It allows users to create and edit documents, spreadsheets, and presentations online through Google Docs, Sheets, and Slides. Files can be shared with other users and edited collaboratively in real-time. Google Drive was initially launched in 2012 and is accessible through mobile apps and online. It has since been updated with features like Quick Access for faster file searching and a unified Backup and Sync app.