I'm advising a small company ($10m) that offers both a subscription software platform (with a multitude of options) and still more options for various add-on services. The services may be one time or ongoing (e.g. support), which is changeable to different levels of service and functionality.
I'm looking at both TRACT and Zuora as a way to handle the subscription plus activity-based billing aspect of it.
I'm concerned with implementation,
Would appreciate any thoughts you have on the subject in general and these company/products in particular. I feel like I have it narrowed down to these two. It would be great to get some insight from both users of these products and folks who have confronted similiar challenges.