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
Microsoft infrastructure
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 Exchange

Design, deployment and operation of Exchange 2016/2019/SE on-premises.

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

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.