A technology assessment is a review of the systems the sites depend on to trade: the phone system, the internet circuits, the firewalls, the cloud services, and the contracts sitting behind all of them. It covers every location, and it treats them as one business rather than a pile of separate bills.
The review starts from what the business needs, not from a product, so the answer can be that the current setup is fine.
Most companies have never had this done, and not because they were not paying attention. The information genuinely exists. It just lives in invoices, inboxes and a few people's heads, spread across every office, and no one has ever had a reason to pull it into one place.