Merge Microsoft Office 365 & Azure Tenants
Codify can help organisations going through Mergers & Acquisitions combine multiple Microsoft environments into one secure, modern cloud estate.
When organisations merge, IT inherits the complexity of both sides.
Codify specialises in merging Azure tenants, combining Office 365 tenants, and unifying cloud environments into a single, secure Microsoft estate without disrupting business operations.
Whether you’re integrating an acquired business, rationalising two mature environments, or separating a carve out, we help you move from fragmented systems to a clean, modern, unified platform.
Why M&A Cloud Migrations Are Different
Traditional cloud migrations focus on ageing hardware or data centre exits. M&A migrations are driven by:
Deal close dates
Day 1 readiness commitments
Board level expectations for synergy savings
The need to reduce risk across two (or more) environments
You don’t just merge environments, you emerge with a better one.
Codify’s CloudLift for M&A doesn’t simply combine what exists. It delivers a cleaner, more secure, more modern Microsoft environment than either organisation had before the deal.
When you might need to merge Azure cloud environments
A newly acquired entity has its own M365 tenant, Microsoft Entra ID (formerly Azure AD) domain, file servers, or Citrix environment.
Two organisations need to merge Office 365 tenants or merge Azure tenants into one.
A business unit is being carved out and requires its own clean Microsoft estate.
You’re executing a roll up strategy and need a repeatable integration process.
Why choose Codify as your Azure Cloud migration partner?
We take personal ownership of customer outcomes, ensuring diligence and proactivity throughout the migration process. Whether retiring unused applications, ‘lifting and shifting’ to the cloud, or rearchitecting with Azure-native solutions, our meticulous attention to detail and high level of visibility instil confidence in our customers during their cloud migrations.
| Source state | Target state |
|---|---|
| Two or more M365 tenants | Single consolidated M365 tenant |
| Multiple Microsoft Entra ID (formerly known as Azure Active Directory or Azure AD) domains / forests | One domain, unified identity, consistent conditional access |
| Citrix / VMware Horizon / legacy VDI | Azure Virtual Desktop (AVD) |
| On-prem file servers | SharePoint Online + Teams with retention & sensitivity labels |
| Batch files, scheduled tasks, point-to-point integrations | Modern integration platform (Logic Apps / Power Automate / Azure Integration Services) |
| Overlapping Azure subscriptions | Unified Azure governance |
| Conflicting IP ranges, VPN sprawl | Rationalised network topology with Zero Trust access |
Codify’s CloudLift for merging Office 365 and Microsoft Entra ID (formerly Azure AD) Tenants
CloudLift for M&A is cloud environment planning, migration, and managed services, taking care of the whole process end-to-end.
CloudLift is unique assessment process Codify have developed to deep dive into your existing servers, storage and network to build an evidence-based plan for your cloud migration.
Discover & Deal Align
We inventory both estates, map overlaps, and align technical milestones to the deal thesis.
Plan the Consolidated Target State
We design the future environment:
- single tenant architecture
- identity strategy (cutover vs coexistence)
- network rationalisation
- application disposition (retain / replatform / retire)
Migrate in Waves
Identity → Collaboration → Workloads This includes mail, Teams, files, AVD, servers, and integrations.
Modernise as we go
Every workload lands in its modern form – not its legacy shape.
Managed Support
One vendor, one SLA, one roadmap.
Security & Compliance Built In
M&A migrations are an opportunity to uplift security, not replicate legacy issues.
We embed:
- Essential Eight maturity uplift
- ISO 27001 alignment
- Sensitivity labels, DLP, and retention policies
- Privileged access modelling
- Zero Trust network design
This ensures the consolidated environment is more secure than either original estate.
Our Accreditations & Expertise
Trusted Microsoft Solutions Partner
We are a trusted Microsoft Solutions Partner with proven expertise in Azure DevOps and application support, serving public sector, enterprise, and regulated industries.
Certified Security & Compliance
We are ISO 27001 / ISO 9001 certified and have qualified Essential 8 Auditors on staff to help you achieve your target security maturity level for online services.
Deep Azure Expertise
We have deep expertise in modernising and supporting custom-built cloud applications on Azure.
Full Range of M&A Migration Services
Frequently Asked Questions about Merging Microsoft Cloud Environments
Can you merge two Office 365 environments?
Yes, an Azure Cloud specialist like Codify can help you consolidate Microsoft 365 environments including email, Teams, SharePoint, OneDrive, and security policies into a single unified tenant. We manage the full end‑to‑end migration and provide managed support post cloud environment merge in Australia.
Can you merge Azure AD tenants?
Microsoft Entra ID (formerly Azure AD) tenants can’t be merged natively, but Codify performs structured tenant‑to‑tenant migrations to unify identity, subscriptions, workloads, and governance.
Will users experience downtime when we merge Office 365 environments?
Minimal. We design coexistence where required and schedule cutovers outside business hours, and Codify manages the process to keep users productive.
Can you merge M365 and Azure environments from different vendors?
Yes. We consolidate Azure, M365, and hybrid environments into one unified Microsoft estate, with Codify providing the architecture, migration, and operational uplift.
What happens to security and compliance when we merge Microsoft Entra ID tenants or M365 environments?
We uplift security – MFA, conditional access, DLP, retention, and ISO 27001 alignment – rather than replicating legacy issues. Codify ensures the merged environment is more secure than before.
Do you support roll‑up acquisition strategies where we repeatedly merge M365 tenants?
Yes. Codify’s CloudLift for M&A is designed to be repeatable for organisations acquiring multiple entities, enabling a consistent, scalable integration pattern.
Can you separate a business unit (carve‑out) from an existing M365 tenant?
Absolutely. We build a clean, independent Microsoft estate for the carved‑out entity, and Codify manages the full carve‑out migration to ensure a smooth transition.
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