[WindowsCentral.com]

Microsoft's OneDrive now lets you view your files without having to download them using on-demand sync. Here's how it works.

OneDrive Files On-Demand is a new feature coming in the Windows 10 Fall Creators Update, which allows you to access all your files stored in the cloud using File Explorer without having to sync them directly and use storage space on your device. It's a feature that's similar in concept to the now-defunct OneDrive placeholders.
Currently, OneDrive uses selective sync, which downloads every file to your device, but takes up a lot of space. On the other hand, with Files On-Demand only pieces of information (e.g., metadata and thumbnail image) about a file are stored locally. This is a faster and more efficient approach, which allows you to browse your entire collection of files without sacrificing local storage. At the time to work with a file, you simply double-click the placeholder to complete the download and open the file with an app.
In this Windows 10 guide, we'll show you everything you need to know to use OneDrive Files On-Demand.

Full story from the WindowsCentral blog...