Unified Communications and a Service, or "UCaaS," providers develop and operate cloud-based UC services that offer superior collaboration, faster deployment and often lower cost compared to premises-based solutions.

Gartner's Magic Quadrant provides a lot of useful information on the  industry leaders - the good, the bad, and the ugly.

Brookside assists in selecting the right provider(s) and carriers that best aligns to their organization’s needs and makes sure you get what you pay for and manage the implementation for you.

Gartner provides useful information on the industry leaders in multiple categories including LEADERS, CHALLENGERS, NICHE PLAYERS, & VISIONARIES.