This recognition reinforces RingCentral’s core values: Focused, Innovative, Trusted, and Empowering (FITE). They strive to serve as a trusted leader to their customers and partners.  RingCentral is relentlessly focused on delivering technological innovation. They want that innovation to empower people to efficiently and effectively communicate and collaborate from anywhere on any device.
Business and IT leaders want to work with the most reputable companies to help them drive strategic value, agility, and growth. RingCentral’s team is 100% committed to providing the most consistent, reliable, and truly unified communications. To accomplish this, they strive for a collaboration experience to help customers, partners, and employees get more work done with less effort. Allowing them to thrive in this digital age.
Here is the whole list from Forbes.