Rainbow is a Unified Communication as a Service (UCaaS) and Communication Platform as a Service (CPaaS). Rainbow is a Unified Communication as a Service (UCaaS) and Communication Platform as a Service (CPaaS). It is a hybrid cloud solution for enterprise communications which aims to connect people and systems optimally. It can be integrated with your existing private business exchanges (PBX), business processes, team-based messaging applications, and third-party apps, thereby ensuring that multiple stakeholders can communicate on a single platform simultaneously in their respective environment in a secure manner. Rainbow provides a collaborative platform on any device and enables teams to see the real-time presence of their colleagues and instantly connect, collaborate, and share screens or documents with them. It improves productivity and performance by expediting digital transformation and helping organizations optimally utilize their on-premise capabilities.