CPaaS (Communications Platform as a Service) is a cloud-based platform that enables businesses to integrate real-time communication features—such as voice, video, messaging, and authentication—into their applications without needing to build backend infrastructure. CPaaS providers offer APIs and SDKs that allow developers to embed communication capabilities into web and mobile applications seamlessly. This service is commonly used for customer engagement, call automation, and interactive messaging solutions across industries like healthcare, finance, retail, and enterprise communications.