Final answer:
The best methods to inform technicians about the new URL for an application are to send a mass email and to update the knowledge base article with the new URL.
Step-by-step explanation:
The best way to share the updated URL for the online reporting application with other technicians after a server upgrade would be to send out a mass email with the new URL to all the technicians. This ensures that everyone receives the pertinent information directly and can refer back to it if necessary.
Another effective approach is to update the knowledge base article that contains the application's URL in the call tracking application, ensuring that anyone looking for the information will find the most current URL. It's important to give them all the information they'll need in a method that is easy to reference and use on an ongoing basis.