If you have multiple PC's, downloading the Windows 10 Anniversary update as an ISO would save internet bandwidth costs and time. Here are direct ISO download link of the update Windows 10 build.

With Windows 10 Microsoft has changed a lot of things and one of them is to not offer direct links to ISO downloads of the OS, when visiting the official Windows10ISO download page all you are offered is the option to download the "Media Creation Tool" which helps a user to create installation media but requires an active internet connection and restarts the whole process if interrupted in between. But here's a trick on how to grab the real direct ISO download links which you can download and save using a download manager of your choice.