I like the flexibility CA Spectrum offers to model networks with devices and different locations and technologies.
It is easy to use and offers a lot out-of-the-box features (i.e. multi-vendor support, network discovery).
If necessary there are also APIs to develop our own integrations.
Improvements to My Organization:
Spectrum admins mostly enjoy having a powerful fault management platform which also lines up and integrates with the other software products they are using, i.e. trouble ticketing system and performance management solutions.
Room for Improvement:
There is still room for improvement for mobile clients like tablets and smartphones. Most of the functionality can only be used with the Java client.
We've had no issues with deployment.
We've had no issues with stability.
We've had no issues with scalability. Especially with the latest release, the scalability was improved which allows support for huge networks with a small number of CA Spectrum servers.