Moving to Microsoft Azure: a business owner's guide

Azure is the second-largest cloud, and for one specific kind of company it’s the first one to evaluate: the company that already runs on Microsoft. Here’s when that logic holds, when it doesn’t, and what the move actually involves.

What Azure is, in one minute

Microsoft Azure holds roughly 25% of the global cloud market (AWS ~30%, Google Cloud ~11-13%). Like its rivals it rents IaaS primitives, virtual machines, managed databases, storage, networking, plus a large managed-services catalog on top.

Azure’s real differentiation isn’t a service; it’s gravity. Microsoft already owns the identity system (Entra ID, formerly Azure AD), the desktop estate (Windows, Microsoft 365), the licensing relationship (Enterprise Agreements), and often the database (SQL Server) at hundreds of thousands of companies. Azure is engineered to make extending that estate into the cloud the path of least resistance, and to make the invoice land on an agreement you already have.

That’s neither good nor bad by itself. It’s leverage if you’re a Microsoft shop, and mostly irrelevant if you’re not.

The core services you’ll actually use

The primitives map almost one-to-one to AWS; the names differ:

Service	What it is	AWS equivalent	Rough cost anchor
Virtual Machines	Servers you size and manage	EC2	~$30/mo for 2 vCPU / 4 GB Linux (B2s-class); Windows adds license cost unless you bring your own
Azure SQL / Database for PostgreSQL	Managed databases, patching, backups, failover handled	RDS	~$60-130/mo small tier; SQL Server options are the deepest of any cloud
Blob Storage	Object storage for files, backups, static assets	S3	~$0.018-0.021/GB-month hot tier
Virtual Network (VNet)	Your private network, subnets, routing, firewall rules	VPC	Free itself; NAT and peering traffic metered
Entra ID	Identity and access for users and infrastructure	IAM + a directory	Free tier covers basics; P1/P2 licensed per user

A VNet is Azure’s version of a VPC, and the same rule applies: design networking and identity before the first workload lands, that’s the landing zone. Add load balancers, Azure Monitor, Azure Functions (serverless), and AKS (Kubernetes) as the deployment matures.

One Azure-specific strength worth naming: Azure Migrate, free tooling that discovers a VMware/Hyper-V estate, maps dependencies, and estimates costs. For on-prem-heavy migrations it’s the most polished first-party assessment tool of the three clouds.

The Microsoft-shop math

This is the section that decides most Azure evaluations. If you run Windows Server, SQL Server, and Active Directory today:

Azure Hybrid Benefit lets you apply Windows Server and SQL Server licenses you already own (with Software Assurance) instead of renting them again by the hour. On SQL Server VMs, where licensing often exceeds the compute cost, this commonly cuts the bill 20-40%, sometimes more.
Extended Security Updates for aging Windows Server / SQL Server versions are free in Azure and expensive anywhere else, a blunt but real incentive when you’re carrying 2016-era servers you can’t upgrade yet.
Entra ID is already your directory. Your users, groups, MFA, and conditional-access policies extend to cloud infrastructure without building a second identity system or federating across providers.

Worked comparison, a line-of-business app on 2 Windows Server VMs + SQL Server Standard (4 cores), licenses owned:

Item	Azure w/ Hybrid Benefit	Cloud X, license-included
2 × Windows VMs (2 vCPU/8 GB)	~$140/mo	~$280/mo
SQL Server Standard, 4 vCPU managed	~$380/mo	~$700/mo
Compute + license total	≈ $520/mo	≈ $980/mo

Numbers are directional (region and size shift them), but the shape is consistent: owned Microsoft licenses roughly halve the Microsoft-workload bill, and only Azure lets you reuse them this broadly. For Linux/open-source workloads this entire advantage evaporates, see the three-way pricing comparison.

The standard pricing gotchas apply on Azure exactly as elsewhere: egress at ~$0.087/GB after a free allowance, on-demand rates for steady workloads (fix with 1-3-year Reservations or Savings Plans, 30-65% off), and forgotten resources, covered in avoiding bill shock.

When Azure is the right pick, and when it isn’t

Azure is the strong pick when:

You’re Microsoft-first: Windows Server, SQL Server, AD/Entra ID, .NET applications, an Enterprise Agreement. The licensing and identity math above is decisive.
You’re hybrid for the long haul. Azure Arc and Azure Local (formerly Azure Stack HCI) are the most developed story for managing cloud and on-prem as one estate, relevant for factories, clinics, retail sites that keep local hardware.
Compliance teams already trust Microsoft. Certifications are equivalent across the big three, but enterprise procurement and audit relationships with Microsoft often shorten the paperwork in regulated industries.

Look elsewhere first when:

You have no Microsoft estate. A Linux/PostgreSQL/containers stack gains nothing from Azure’s differentiators; AWS offers a deeper catalog and a larger hiring pool, and it’s the safer generic default.
Data/ML is the product. Google Cloud’s BigQuery and GKE still set the bar for analytics and Kubernetes-first teams; Azure’s equivalents (Fabric/Synapse, AKS) are competitive but rarely the reason a team picks Azure.
You want the simplest possible cloud. Azure’s portal and naming (three generations of service names coexist) have a real learning curve. Nobody picks Azure for elegance; they pick it for fit.

Honest bottom line: for a Microsoft shop, Azure usually wins on math, not marketing. For everyone else, it’s a capable second option that needs a specific reason.

How a migration to Azure actually goes

Same discipline as any cloud migration, the roadmap playbook covers the full method:

Discovery (1-2 weeks). Run Azure Migrate against your VMware/Hyper-V estate for inventory, dependency mapping, and cost estimates. Classify each workload per the 6 Rs, and count the licenses you own; they’re an input to the business case, not a footnote.
Landing zone (about a week). Management groups, subscriptions, VNet layout, Entra ID roles, Azure Policy guardrails, central logging. Microsoft’s Cloud Adoption Framework reference is genuinely useful here; adapt it, don’t adopt all of it.
Replicate and test (2-4 weeks per wave). Azure Migrate replicates VMs continuously; Database Migration Service handles SQL Server and PostgreSQL moves. Test against real data while production keeps running.
Cutover. DNS/traffic switch in a planned window with a rehearsed rollback, the zero-downtime patterns apply unchanged.
Optimize. Right-size, buy reservations, apply Hybrid Benefit everywhere it fits, review monthly.

Timeline expectations match the other clouds: 4-8 weeks for one application, 4-9 months for a 10-20 app portfolio.

FAQ

Is Azure cheaper than AWS?

For general Linux workloads, no, list prices land within roughly ±15% of each other and vary by region and instance family. For Windows Server and SQL Server workloads, often yes: Azure Hybrid Benefit lets you apply licenses you already own, commonly cutting those VMs’ costs 20-40% versus paying license-included rates elsewhere.

Do we need Azure if we already use Microsoft 365?

No, Microsoft 365 runs the same regardless of where your servers live. But you already have Entra ID (Azure AD) as your identity system, so putting infrastructure in Azure means single sign-on, conditional access, and group-based permissions extend to your servers with near-zero extra plumbing. That’s convenience and security leverage, not a requirement.

How long does a migration to Azure take?

Similar to any cloud: 4-8 weeks for a single application including landing-zone setup, replication, and cutover; 4-9 months for a portfolio of 10-20 applications. Azure Migrate’s discovery and replication tooling is genuinely good for VMware estates, which can compress the assessment phase.

What is Azure Hybrid Benefit, in plain terms?

It lets you bring Windows Server and SQL Server licenses you already own (with Software Assurance) to Azure instead of renting them again inside the VM price. On a SQL Server VM, licensing is often the majority of the hourly cost, so reusing licenses is one of the biggest single savings available in any cloud decision.

Weighing Azure against AWS for a Microsoft-heavy estate, or unsure whether your licenses qualify for Hybrid Benefit? Talk to a Webisoft cloud engineer. We’ll run the licensing math with you and tell you plainly which cloud your workloads favor.