Teams Phone, calling plans, shared devices, rooms, and every voice licensing decision that hits the invoice.
Teams Phone, calling plans, shared devices, rooms, and every voice licensing decision that hits the invoice. Each article below is written from buyer-side engagement experience — what Microsoft charges, what is actually required, and where enterprises routinely overpay. For hands-on help, see our advisory services or talk to a senior advisor.
Every guide in this topic, maintained and updated for 2026 licensing terms.
Our M365 optimisation engagement combines a systematic licence audit with an E3/E5 usage analysis and a Copilot readiness assessment. Most engagements identify $500K–$3M in annual recoverable cost — before any EA renegotiation. The first conversation identifies the likely savings range for your specific deployment and is at no cost.