Trusted with 1,200+ live Microsoft tenants

The one stop shop for workplace communications & data

Cloud numbers, Microsoft Teams, managed Microsoft 365, email security and your contact center — sourced, secured and supported by one certified team. One point of contact, one number to call, one bill.

  • 99.999% uptime SLA
  • One bill, one team
  • Microsoft Solutions Partner
Diagram: CenterOne as one communication center connecting cloud numbers, Microsoft Teams, managed Microsoft 365, contact center, email security, and backup and compliance.
Cloud numbersSIP trunks · porting · e911Microsoft TeamsTeams Phone · direct routingMicrosoft 365Entra ID · Intune · DefenderContact centerOmnichannel queues · AI assistEmail securityThreat defense · encryptionBackup & compliance365 backup · PurviewONE CENTERCenterOneWorkforcecommunication core

Works with

  • Microsoft 365
  • Microsoft Teams
  • Azure
  • Entra ID
  • Intune
  • Defender
  • Purview
  • SharePoint
0%
Average Microsoft licence saving
<0s
Average support answer time
0+
Tenants migrated and managed
0/7
Certified engineers, no scripts

One stop shop: talk, text, email, data

Every channel your workplace runs on, delivered and supported by the same team — no vendor sprawl, no finger-pointing, one invoice.

Talk

Cloud numbers and Teams Phone with enterprise calling on any device.

  • Local & toll-free numbers
  • Teams Phone / direct routing
  • Call recording

Text

Business SMS, chat and meetings in the tools your people already open.

  • Business SMS & MMS
  • Teams chat governance
  • Video meetings

Email

Exchange Online run properly, with threat protection and archiving.

  • Exchange Online admin
  • Defender for Office 365
  • Purview retention

Data

Files, identity and cloud workloads secured, backed up and right-sized.

  • SharePoint & OneDrive
  • Immutable backup
  • Azure & Entra ID

Why teams move their tenant to CenterOne

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
CenterOne engineers' operations desks with Microsoft cloud dashboards
  • Flat per-user pricing covering licences, management, backup and unlimited support
  • Microsoft Solutions Partner engineers handle every migration wave and cutover
  • Secure Score improvement targets written into your service agreement
  • Quarterly licence right-sizing reviews that hand savings back to you

Why teams choose CenterOne

The honest comparison against the way most workplace communications and Microsoft estates get bought today.

One vendor for talk, text, email and data

Most providers
Separate contracts for phones, Microsoft licences, security and backup — four bills and four support queues.
With CenterOne
Every workplace communication and data service sourced, billed and supported through one team.

ProofClients consolidate an average of 4 vendors into a single monthly invoice.

Support that answers, not a ticket queue

Most providers
Tier-1 scripts, callbacks in business hours, and escalations that lose a day.
With CenterOne
24/7 certified engineers who can change your tenant on the first call — no scripts, no handoffs.

ProofUnder 30 seconds average answer time, 91% resolved on first contact.

Licences right-sized every quarter

Most providers
Renewal quotes based on last year's seat count, with unused E5 licences quietly billed forever.
With CenterOne
Quarterly licence reviews with the savings handed back to you, not kept as margin.

Proof22% average Microsoft licence saving in the first year.

Security posture in the contract

Most providers
Security sold as an add-on project, with no committed outcome once it's deployed.
With CenterOne
Defender, Intune, Entra ID and Purview configured and maintained against written Secure Score targets.

ProofSecure Score improvement targets are contractual, and reported monthly.

Migrations that don't cost you a Monday

Most providers
Big-bang cutovers, weekend outages, and users discovering broken mail on their own.
With CenterOne
Waved migrations planned, tested and run by the same engineers who manage you afterwards.

Proof1,200+ tenants migrated with zero unplanned business-hours downtime.

Predictable flat per-user pricing

Most providers
Hourly overage, project fees, and change requests billed on top of the managed service.
With CenterOne
One per-user rate covering licences, management, backup and unlimited support.

ProofNo change-request fees — quoted once, billed the same every month.

One accountable team, not a chain of suppliers

The reason clients consolidate with CenterOne is simple: when something breaks, there is exactly one team responsible for fixing it — and we have the certifications and the access to actually do it.

One contract, one SLA

Voice, Microsoft licences, security, backup and endpoints sit on a single agreement with a single set of commitments. Nothing falls between two suppliers.

A named owner, start to finish

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 escalation path

One number, any issue, any hour. We chase the carrier, the licensing change or the tenant fault ourselves and come back to you with the answer.

If it carries your work, we own it

Numbers and calling, Teams, Microsoft 365, Azure and identity, contact center, email security, backup and managed devices — all in scope, all accountable to us.

Average answer time, 24/7
< 30sAverage answer time, 24/7
Severity-1 response commitment
15 minSeverity-1 response commitment
Voice platform availability target
99.99%Voice platform availability target
Business-hours downtime planned per cutover
0Business-hours downtime planned per cutover

Written into every service agreement and reported to you monthly.

How onboarding actually works

A repeatable process we have run more than 1,200 times. You always know what happens next, who is doing it, and when.

  1. Week 1

    Assess

    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.

  2. Week 2

    Design

    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.

  3. Weeks 3-6

    Migrate in waves

    Pilot group first, then departmental waves with a tested rollback at every stage. Cutovers run outside business hours with our engineers on the bridge.

  4. Ongoing

    Run and optimise

    24/7 support, monthly reporting against your SLA and Secure Score targets, and quarterly licence right-sizing that hands the savings back to you.

What clients say after the cutover

They cut our Microsoft 365 bill by 24% in the first quarter and tightened every conditional access policy.
Dana WhitfieldIT Director, Harborline Logistics
They moved 640 mailboxes and our whole SharePoint estate over one weekend. Monday morning nobody noticed.
Marcus ReedVP Operations, Cedar Health Group
Defender, Intune and Purview finally configured properly — our SOC 2 audit was the easiest we have had.
Priya NandakumarCISO, Vantage Financial

Built for regulated, distributed teams

Healthcare

HIPAA-aligned 365 tenants with BAAs, Purview retention, and encrypted mail.

Financial services

Teams call recording, immutable archiving, and supervisor oversight in Purview.

Retail & services

Intune-managed frontline devices and flexible seasonal licence counts.

Professional services

Teams Phone with desk-phone parity and secure mobile access for hybrid staff.

Start with a free Microsoft 365 tenant assessment

A certified engineer reviews your licences, identity posture and Secure Score, then walks you through the findings. No obligation, no sales script.

Book a 20-minute demo