Cerillion Plc engages in the provision of software for billing, charging, and customer relationship management to the telecommunications sector in the United Kingdom, Europe, the Middle East and Africa, the Americas, and the Asia Pacific. It operates through three segments: Services, Software, and Other. The company offers Cerillion Unify, a pre-packaged SaaS solution for quad-play CSPs; Cerillion Enterprise for B2B telecom operators; Cerillion Engage for digital-first customer experience; Cerillion Skyline, a SaaS solution for subscription businesses; and Cerillion Metro, a BSS/OSS solution for smart cities. It also provides convergent charging systems, a 3GPP complaint convergent charging and policy management system for online and offline services; Enterprise Product Catalogue, an AI platform for building, launching, and managing various products, services, tariffs, and packages; CRM Plus, an omni-channel CRM solution; and Revenue Manager, a billing and revenue management solution. In addition, the company offers Service Catalogue and Manager, an order management and service fulfillment solutions; Self Service, a composable digital experience; Output Streamer, a document fulfilment solution; Interconnect Manager, an interconnect billing and settlement solution; Mediator Plus, an online and offline mediation solutions; and Mobile App, a white label self-service mobile application. Further, it provides Business Insights, an AI powered analytics platform; Dealer Portal, a web application; Network Inventory, a suite of software products; and Integration Layer for integration and open BSS/OSS capabilities. Cerillion Plc was founded in 1999 and is headquartered in London, the United Kingdom.