Hybrid council IT network integrating on-premises infrastructure with third-party SaaS platforms across communications, finance, housing, planning, and leisure services. Data flows from core systems like Unit4 ERP and Idox planning tools through firewalls and session border controllers to cloud services including Microsoft 365, Teams Telephony, and Civica e-payment solutions. This architecture demonstrates how local authorities consolidate disparate vendor systems—NEC housing, Astech CMIS, Gladstone leisure management—while maintaining security boundaries between on-prem databases (SQL Server, Oracle) and external integrations. Fork this diagram to customize vendor mappings, add additional clusters, or document your council's specific service dependencies and compliance requirements.