Apple Mac and One Drive - Files on Demand.
Today is a great day, Microsoft has now updated OneDrive to Files On Demand so that now you don't have to download all synced files from OneDrive. This has been on the Windows version for a while making it a very convenient way of adding the Mac family to sharepoint and AzureAD.
There are a few things you need to do to turn it on, but when you click on the cloud on top of your mac, it will guide you through the process.
Once you click the cloud, just follow the Files On Demand Prompts.