Microsoft Exchange
Design, deployment and operation of Exchange 2016/2019/SE on-premises.
Microsoft Infrastructure Consulting
Microsoft Infrastructure Consulting
AR IT Solutions helps companies, MSPs and enterprise IT teams design, migrate, optimize and support Microsoft infrastructures with a focus on Exchange, Microsoft 365, Active Directory and Entra ID.
Exchange Microsoft 365 Entra ID Active Directory
Trusted Microsoft Stack
Microsoft ExchangeMicrosoft 365Entra IDAzurePowerShellWindows ServerActive Directory
Services
End-to-end Microsoft infrastructure expertise
From architecture to operations — senior consultancy across messaging, identity and automation.
Microsoft 365
Tenant design, configuration, governance and adoption for M365 workloads.
Exchange Hybrid
Reliable Hybrid setups with seamless mail flow and identity sync.
Active Directory
AD architecture, modernization, hardening and trust topologies.
Entra ID
Entra ID design, Conditional Access, SSO and hybrid identity strategy.
PowerShell Automation
Automation frameworks and operational tooling at enterprise scale.
Support Services
2nd & 3rd Level Support for Microsoft environments
Structured escalation support, incident resolution and long-term operational partnership.
2nd Level Support
Hands-on support for messaging and identity escalations.
3rd Level Support
Deep expert support for complex Microsoft infrastructure issues.
Incident Resolution
Fast, structured response to production-impacting incidents.
Root Cause Analysis
Methodical RCA with clear remediation and prevention measures.
Operational Support
Ongoing operations partnership for day-to-day platform stability.
Infrastructure Health Checks
Structured assessments with actionable remediation roadmaps.
Why Choose AR IT Solutions
Senior expertise, predictable delivery
A reliable partner for complex Microsoft infrastructure work — from feasibility to go-live and beyond.
8+ Years Experience
Enterprise Projects
Fast Response
Remote Germany-wide
Microsoft Infrastructure Specialist
Reliable Delivery
Selected Projects
View all Recent engagements
Migration
Exchange 2016 → 2019 Migration
End-to-end coexistence design and cutover for a 4,000-mailbox enterprise.
Cloud
Microsoft 365 Tenant Migration
Cross-tenant M365 migration including mailboxes, OneDrive and Teams.
Hybrid
Exchange Hybrid Deployment
Greenfield Hybrid setup with modern auth and ATP integration.
Testimonials
Trusted by IT teams and enterprises
“Strategic, calm under pressure, and exceptionally precise. Our Exchange migration ran without a single end-user incident.”
Head of IT Operations
Mid-size enterprise, Germany
“Deep Microsoft 365 expertise paired with clean documentation. Exactly the partner we wanted for our tenant consolidation.”
CIO
Manufacturing group
“Reliable, structured, and pragmatic. The health check delivered clarity we hadn't had in years.”
Infrastructure Lead
Managed Service Provider
Plan your next Microsoft project with confidence.
Book a free, no-strings consultation. We'll discuss your environment, goals and the most pragmatic path forward.