Providing online, non-downloadable, cloud-based software for integrating one or more software modules, namely, global SIP trunking, conversational AI, call verification, and voice bio-authentication with other Unified Communications as a Service (UCaaS) and Contact Center as a Service (CCaaS) communication platforms; Providing online, non-downloadable, cloud-based software for facilitating inter-operability of multiple communications modules namely, modules for global SIP trunking and telephone number management; conversational artificial intelligence (AI) for contact centers; caller verification for fraud detection and number spoofing activity; voice bio-authentication for securely identifying callers; and in-app calling functionality from mobile and browser-based applications for quickly engaging with agents with communications services deliverable to Unified Communications as a Service (UCaaS) and/or Contact Center as a Service (CCaaS) platforms; providing an online, non-downloadable, cloud-based visual builder module for facilitating the creating, connecting, and customizing of communication workflows with other communications platforms