What is the easiest way for Rob to freeze users in production during a release window?

The easiest way for Rob to freeze users in production during a release window is to create a manual task to manually freeze users. This approach allows for immediate action where Rob can control the timing and method of freezing users without relying on automated processes or external dependencies.

When using a manual task, it is straightforward—Rob can take necessary steps to notify users and temporarily disable their access or functionality as needed during the release window. This method requires minimal setup, allows for flexibility, and can be executed quickly, facilitating a smooth transition during the release process.

The other options may involve more complexity or lack direct control. For instance, a scheduled job requires prior planning and might not allow for flexibility if unexpected issues arise. Implementing a script can be effective but necessitates development time and testing to ensure it works correctly. Notifying users is important but does not effectively prevent users from making changes; it relies on users following instructions, which might not always happen. Thus, creating a manual task is the most straightforward and effective method for freezing users during a release window.