The trend is steady and unmistakable: Businesses are moving to the cloud. In stages, they are moving externally and internally facing services and custom and off-the-shelf applications and services. They are adopting infrastructure as a service (IaaS), platform as a service (PaaS), software as a service (SaaS), increased virtualization, microservices, and containerization for improved reliability and performance. They are using public cloud, private cloud, and hybrid clouds; but the trend has been shifting to the public cloud in the last few years at an accelerating rate.

We are seeing this trend toward cloud in the communications technology industry. Traditional on-premises communications services have been moving to the cloud for over a decade, but we are now starting to see this happen on a larger scale.

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