Cloud numbers, Microsoft Teams, managed Microsoft 365, email security and your contact center — designed, secured and run by CenterOne and our certified affiliates inside the Microsoft ecosystem. One point of contact, one accountable team, one bill.
Works with
Every channel your workplace runs on, owned end to end by CenterOne. We work inside the Microsoft ecosystem rather than around it — so nothing gets chased, escalated or blamed on someone else.
Cloud numbers and Teams Phone with enterprise calling on any device.
Business SMS, chat and meetings in the tools your people already open.
Exchange Online run properly, with threat protection and archiving.
Files, identity and cloud workloads secured, backed up and right-sized.
Coverage
CenterOne delivers numbers, Microsoft Teams calling, contact center and managed Microsoft services across the United States, the United Kingdom and Europe — with data kept in the region you operate in.
Coast-to-coast numbers, e911 and Teams Phone routing.
UK-resident data, Ofcom-compliant numbers and porting.
In-country DIDs and GDPR-aligned data residency across the EEA.
Need a location that is not on the map? We provision numbers in 90+ countries — ask us and we will confirm lead time before you sign anything.
Most providers resell Microsoft licences and call it managed services. We take responsibility for the outcome: a secure, well-governed, right-sized tenant.
Explore managed Microsoft services
The honest comparison against the way most workplace communications and Microsoft estates get bought today.
ProofClients consolidate an average of 4 suppliers into a single monthly invoice.
ProofUnder 30 seconds average answer time, 91% resolved on first contact.
Proof22% average Microsoft licence saving in the first year.
ProofSecure Score improvement targets are contractual, and reported monthly.
Proof1,200+ tenants migrated with zero unplanned business-hours downtime.
ProofNo change-request fees — quoted once, billed the same every month.
CenterOne and our certified affiliates operate as a single delivery organisation across Microsoft, carrier and security platforms. You hold one contract with us — we hold every relationship behind it, and the accountability stays here.
Voice, Microsoft licences, security, backup and endpoints sit on a single agreement with a single set of commitments. Nothing falls between two suppliers.
You get a named lead engineer and account lead at kickoff. The people who design and migrate your environment are the people who run it afterwards.
One number, any issue, any hour. We hold the relationships with Microsoft, the carriers and our CenterOne affiliates — and we use them so you never have to.
Numbers and calling, Teams, Microsoft 365, Azure and identity, contact center, email security, backup and managed devices — all in scope, all accountable to us.
Written into every service agreement and reported to you monthly.
A repeatable process we have run more than 1,200 times. You always know what happens next, who is doing it, and when.
A certified engineer audits your numbers, tenant, licences, identity posture and Secure Score, then walks you through exactly what we found and what it costs today.
You get a written target design and migration plan: seat counts, calling model, security baseline, backup policy, and the commitments we will sign up to.
Pilot group first, then departmental waves with a tested rollback at every stage. Cutovers run outside business hours with our engineers on the bridge.
24/7 support, monthly reporting against your SLA and Secure Score targets, and quarterly licence right-sizing that hands the savings back to you.
They cut our Microsoft 365 bill by 24% in the first quarter and tightened every conditional access policy.
They moved 640 mailboxes and our whole SharePoint estate over one weekend. Monday morning nobody noticed.
Defender, Intune and Purview finally configured properly — our SOC 2 audit was the easiest we have had.
HIPAA-aligned 365 tenants with BAAs, Purview retention, and encrypted mail.
Teams call recording, immutable archiving, and supervisor oversight in Purview.
Intune-managed frontline devices and flexible seasonal licence counts.
Teams Phone with desk-phone parity and secure mobile access for hybrid staff.
A certified engineer reviews your licences, identity posture and Secure Score, then walks you through the findings. No obligation, no sales script.
