The provided string appears to be a filename for a video file:
The WEB-DL format has several advantages over traditional digital releases. For one, it allows for faster distribution, as content can be made available for download shortly after its initial release. Additionally, WEB-DL releases are often more accessible, as they can be easily downloaded and played on a range of devices.
If a file is labeled "AMZN.WEB-DL," Amazon has already done the hard work of encoding it perfectly. All you have to do is pay them for the keys to the castle.