Muhammad S.

I'm a Solution Architect specializing in the full Microsoft stack — Microsoft 365 (every workload), on-premises Windows Server and Active Directory environments, and enterprise email systems including Exchange Server and hybrid deployments. I design and deliver architectures that modernize legacy infrastructure, unify hybrid environments, and keep mission-critical email and collaboration running without compromise. For 10+ years, I've helped organizations move from aging on-prem servers to cloud and hybrid models — preserving compliance, minimizing downtime, and giving IT teams a clean, well-documented foundation to build on. 🔹 Microsoft 365 — Full Suite Architecture Exchange Online — mail flow design, hybrid coexistence, transport rules, anti-spam/anti-phishing SharePoint Online — information architecture, governance, SPFx customization, hub/site design OneDrive for Business — sync strategy, retention, known-folder move Microsoft Teams — voice (Teams Phone, Direct Routing), meetings, governance, app strategy Power Platform — Power Apps, Power Automate, Power BI, Power Pages, Dataverse Microsoft Purview — DLP, retention, eDiscovery, sensitivity labels, compliance Microsoft Defender (XDR) — Defender for Office 365, Endpoint, Identity, Cloud Apps Entra ID (Azure AD) — Conditional Access, MFA, SSO, identity governance Intune — device management, app protection, autopilot, compliance policies Microsoft 365 Admin Center, Copilot for M365 readiness & deployment 🔹 Microsoft On-Premises Architecture Windows Server (2012 R2 → 2025) — design, deployment, hardening, lifecycle Active Directory Domain Services — forest/domain design, sites & services, GPO strategy AD FS, AD CS (PKI), AD RMS — federation, certificate services, rights management Group Policy architecture & migration to Intune (co-management & cloud-native pivots) File Servers, DFS-N/DFS-R, Print Services Hyper-V & failover clustering Microsoft Endpoint Configuration Manager (SCCM/MECM) Hybrid identity — Entra Connect (Azure AD Connect), Cloud Sync, Pass-through Auth, PHS Domain controller modernization, AD cleanup, tier-model security 🔹 Email Server Architecture & Migration Exchange Server (2013 / 2016 / 2019 / Subscription Edition) — design, DAGs, namespace planning Exchange Hybrid — full hybrid, modern hybrid agent, free/busy, mail flow, autodiscover Mail flow & transport architecture — connectors, smart hosts, edge transport, MX routing Email security — SPF, DKIM, DMARC, ATP/Defender for O365, third-party gateway integration Migrations — Exchange on-prem → Exchange Online (cutover, staged, hybrid), cross-tenant, IMAP, Google Workspace → M365, Lotus Notes/Domino → Exchange/M365 Public folder migration & decommissioning legacy Exchange servers Disaster recovery, archiving, journaling, and compliance retention 🔹 Why Work With Me ✔️ Architecture-first approach — design documents, diagrams, and decision logs before any change ✔️ Hybrid expertise — equally fluent on-prem and in the cloud ✔️ Migration specialist — minimal downtime, preserved permissions, clean cutover ✔️ Security & compliance baked into every design (Zero Trust, least privilege, MFA-first) ✔️ Clear communication for both technical teams and business stakeholders ✔️ Free 2-month post-go-live support on every engagement 🔹 Ideal Engagements Migrating from on-prem Exchange or legacy mail platforms to Microsoft 365 Designing or modernizing Active Directory and Windows Server estates Architecting hybrid identity and hybrid Exchange deployments Decommissioning legacy on-prem servers safely and completely Planning SharePoint, Teams, or full M365 rollouts with proper governance Independent architectural review of vendor proposals or internal designs 🔹 Let's Talk If you need a Solution Architect who knows both sides of the wire — on-prem and cloud — and can design email and collaboration systems that just work, send me an invite. I'll review your environment and outline a clear, phased approach on a free discovery call.