A Guide to Microsoft Azure for Businesses

Microsoft Azure has become an important part of the technology strategies used by businesses of all sizes.

Organisations use Azure to host servers, run applications, store data, support remote working, protect critical systems, recover from disruption and build artificial intelligence solutions.

However, Azure is not a single product.

It is a broad cloud platform containing services for infrastructure, networking, storage, databases, cybersecurity, application development, analytics, automation and AI. This range of capabilities makes Azure powerful, but it can also make the platform difficult to understand without clear planning.

The most successful Azure projects do not begin by moving everything into the cloud. They begin by identifying a genuine business requirement and selecting the services that address it securely and cost-effectively.

This guide explains what Microsoft Azure is, how businesses can use it and what you should consider before adopting or expanding your Azure environment.

What Is Microsoft Azure?

Microsoft Azure is Microsoft’s cloud computing platform.

It provides businesses with access to computing resources and managed services without requiring them to purchase and operate all the underlying physical infrastructure themselves.

Azure services can support everything from a simple hosted website to complex virtual networks, databases, AI applications and enterprise-scale business systems. Microsoft describes Azure as a cloud platform offering services for infrastructure, data, analytics, applications and artificial intelligence. 

A business may use Azure to:

• Run virtual servers
• Store files and application data
• Host websites
• Operate databases
• Deliver remote desktops
• Back up systems
• Support disaster recovery
• Connect offices
• Manage applications
• Analyse data
• Automate processes
• Build AI-powered solutions

Businesses do not need to adopt every part of the platform. Azure can be used for a single workload or form the foundation of a wider cloud strategy.

How Is Azure Different from Microsoft 365?

Microsoft Azure and Microsoft 365 are related, but they are not the same service.

Microsoft 365 provides productivity and collaboration applications such as:

• Outlook
• Exchange Online
• Teams
• SharePoint
• OneDrive
• Word
• Excel
• PowerPoint

Azure provides the wider cloud infrastructure and platform services used to host, connect, secure and develop technology solutions.

A business might use Microsoft 365 for email and document collaboration while using Azure for:

• Virtual machines
• Application servers
• Databases
• Cloud networking
• Backup
• Disaster recovery
• Remote desktops
• Custom software

Microsoft Entra ID, formerly known as Azure Active Directory, provides identity and access capabilities used across Microsoft 365, Azure and many third-party applications.

Understanding Cloud Service Models

Azure services are commonly grouped into three broad cloud models.

Infrastructure as a Service

Infrastructure as a Service, or IaaS, gives the customer access to virtualised computing infrastructure.

This may include:

• Virtual machines
• Storage
• Virtual networks
• Firewalls
• Load balancers

Azure Virtual Machines allow businesses to run Windows or Linux systems without buying the physical servers on which they operate. However, the customer still needs to manage areas such as the operating system, applications, configuration and security updates. 

IaaS may be suitable when a business needs:

• Greater control over the operating system
• Support for an existing application
• A cloud replacement for a physical server
• Custom configurations
• A staged migration from on-premises infrastructure

Platform as a Service

Platform as a Service, or PaaS, provides a managed platform on which businesses can run applications without managing as much of the underlying infrastructure.

Examples include managed databases, web application platforms and integration services.

With PaaS, Microsoft manages more of the operating environment, while the customer remains responsible for its application, data, access controls and configuration.

PaaS can reduce administration and allow developers to focus more on the application itself.

Software as a Service

Software as a Service, or SaaS, delivers a complete application over the internet.

Microsoft 365 is a familiar example.

The provider operates most of the application and infrastructure, while the customer manages areas such as users, permissions, data handling and appropriate configuration.

The division of responsibilities changes depending on whether the service is SaaS, PaaS or IaaS. 

Common Microsoft Azure Services for Businesses

Azure contains a very large catalogue of services. The following are among the most relevant for many organisations.

Azure Virtual Machines

Azure Virtual Machines provide cloud-hosted Windows or Linux computers.

They can be used for:

• Business applications
• Databases
• Development environments
• Remote access
• Legacy systems
• File or application services

Virtual machines can be resized as requirements change, but they still require active management.

The business or its IT provider remains responsible for areas including:

• Operating-system updates
• Application maintenance
• Backups
• Access control
• Endpoint security
• Monitoring

Moving a physical server into an Azure virtual machine does not automatically modernise the workload. It may simply relocate the same system into a different data centre.

Azure Storage

Azure provides several forms of cloud storage.

These can support:

• Application data
• Files
• Backups
• Archives
• Virtual-machine disks
• Large unstructured datasets

The appropriate storage service depends on how the data will be accessed, how quickly it must be available and how long it must be retained.

Businesses should consider:

• Performance
• Resilience
• Access frequency
• Retention
• Encryption
• Data location
• Backup
• Ongoing cost

Low-cost archival storage may suit information that is rarely accessed, but it may not be appropriate for data that employees require throughout the day.

Azure Backup

Azure Backup can protect supported workloads by creating recovery copies within Microsoft’s cloud platform.

Depending on the design, it may be used to protect:

• Azure virtual machines
• On-premises servers
• Files and folders
• Application data
• Certain databases

A backup strategy should still define:

• What is protected
• How frequently backups run
• How long they are retained
• Who can access them
• How quickly data must be restored
• How recovery will be tested

A successful backup notification does not prove that the organisation can restore its systems within the required timescale.

Azure Site Recovery

Azure Site Recovery can support disaster recovery by replicating suitable workloads to another location.

If the main environment becomes unavailable, the replicated workload may be started in Azure or another configured recovery location.

This can support recovery from events such as:

• Server failure
• Site loss
• Infrastructure disruption
• Certain cyber incidents
• Data-centre outages

Site Recovery is not a replacement for backup.

Replication can reproduce unwanted changes, corruption or malicious activity. Businesses normally need both reliable backups and a suitable disaster-recovery design.

Azure Virtual Desktop

Azure Virtual Desktop provides Windows desktops and applications from the Azure cloud.

Employees can access the environment from supported devices without the full business system being stored locally.

Potential use cases include:

• Remote working
• Contractors
• Temporary staff
• Secure access to specialist applications
• Bring-your-own-device scenarios
• Centralised desktop management
• Multi-site working

A successful deployment requires careful planning around:

• User profiles
• Application compatibility
• Performance
• Internet connectivity
• Identity security
• Printing
• Storage
• Licensing
• Ongoing capacity

It should not be assumed that every traditional desktop application will work perfectly in a virtual environment.

Azure SQL and Managed Databases

Azure offers managed database services that can reduce the need to operate database infrastructure manually.

These may support:

• Business applications
• Customer portals
• Reporting systems
• Web applications
• Software development

A managed database service can handle more of the underlying platform maintenance than a database installed on a traditional virtual machine.

However, the customer remains responsible for important areas such as:

• Database access
• Application security
• Data classification
• Backup requirements
• Retention
• Performance design

Azure App Service

Azure App Service is a managed platform for hosting web applications and APIs.

It can allow developers to deploy applications without managing traditional web servers in the same way they would with IaaS.

Potential benefits include:

• Easier scaling
• Integrated deployment options
• Managed platform maintenance
• Security integrations
• Monitoring
• Support for different development technologies

It is suited to applications designed or adapted for a managed cloud platform.

Azure Functions

Azure Functions allows developers to run code in response to particular events without managing a permanent server.

For example, a function could:

• Process an uploaded document
• Respond to an application event
• Update a database
• Trigger a notification
• Connect two services
• Run a scheduled task

This approach is sometimes described as serverless computing.

The infrastructure still exists, but Microsoft manages more of it and charges are commonly based on the resources consumed by the function.

Azure Logic Apps

Azure Logic Apps helps businesses build workflows and integrations between systems.

A workflow might:

• Receive a form submission
• Create a record
• Request approval
• Notify an employee
• Store a document
• Update another application

Logic Apps can help connect cloud and on-premises systems, although complex integrations still require proper design, security and monitoring.

Azure Monitor

Azure Monitor collects and analyses information about the performance and availability of Azure resources and supported applications.

It can help teams understand:

• Whether systems are available
• How resources are performing
• Whether errors are increasing
• When capacity is approaching a limit
• Whether unusual activity has occurred

Monitoring should be accompanied by clear alerting and response responsibilities.

Generating an alert is not useful unless someone understands it and knows what action to take.

Microsoft Defender for Cloud

Microsoft Defender for Cloud helps organisations review and improve the security of Azure and supported multi-cloud workloads.

Depending on the configuration and licences, it may provide:

• Security recommendations
• Workload protection
• Vulnerability information
• Threat alerts
• Compliance-related visibility
• Security-posture management

Security recommendations should be prioritised according to business risk rather than treated as a checklist where every finding has equal importance.

Microsoft Sentinel

Microsoft Sentinel is Microsoft’s cloud-based security information and event management platform.

It can collect and analyse security information from:

• Azure
• Microsoft 365
• Endpoints
• Firewalls
• Servers
• Identity platforms
• Third-party systems

Sentinel can support threat detection, investigation, automation and security monitoring.

However, a SIEM platform requires careful management. Costs can rise when excessive or low-value data is collected, and alerts still need to be reviewed by capable security personnel.

Business Benefits of Microsoft Azure

Reduced Dependence on Physical Infrastructure

Azure can reduce the need for businesses to purchase and maintain certain physical servers.

This may lower dependence on:

• Server rooms
• Local storage systems
• Hardware warranties
• Physical data-centre space
• Replacement components

However, cloud use does not remove technology costs. It changes how those costs are structured and managed.

Greater Flexibility

Azure resources can often be increased, reduced or changed more quickly than physical infrastructure.

This can help businesses respond to:

• Growth
• Temporary projects
• Seasonal demand
• New applications
• Acquisitions
• Testing requirements

Flexibility is valuable, but uncontrolled resource creation can also lead to unnecessary spending.

Support for Remote and Hybrid Working

Azure can provide secure access to applications and desktops from different locations.

When combined with Microsoft Entra ID, multi-factor authentication and appropriate device controls, it can support employees working from:

• Home
• Branch offices
• Customer locations
• Shared workspaces
• Mobile devices

The experience still depends on reliable internet connectivity and correctly designed access controls.

Improved Business Continuity

Cloud services can reduce reliance on a single physical office or server room.

Azure can support:

• Off-site backups
• Workload replication
• Remote access
• Geographically distributed services
• Automated recovery processes

Resilience is not automatic. The organisation must design the service according to its availability and recovery requirements.

Faster Deployment

New servers, storage and development environments can often be created more quickly in Azure than through traditional hardware procurement.

This can shorten the time required to:

• Test an application
• Launch a project
• Add capacity
• Create a development environment
• Open a new office

Appropriate approval and governance should still be required before new resources are deployed.

Access to Advanced Technology

Azure gives businesses access to services involving:

• Artificial intelligence
• Machine learning
• Data analytics
• Internet of Things
• Automation
• Application integration
• Advanced security

These services can help organisations develop new capabilities without building every underlying platform internally.

Is Azure Automatically Secure?

No.

Microsoft protects the physical infrastructure and underlying cloud platform, but the customer retains important responsibilities.

Depending on the service model, the customer may remain responsible for:

• User identities
• Permissions
• Data
• Applications
• Operating systems
• Network configuration
• Security settings
• Backups
• Monitoring
• Regulatory compliance

This is known as the shared-responsibility model. The exact division changes between SaaS, PaaS and IaaS services. 

For example, Microsoft may protect the physical data centre hosting an Azure virtual machine, while the customer remains responsible for patching the virtual machine’s operating system and securing the application running on it.

Important Azure Security Controls

A secure Azure environment may include:

• Multi-factor authentication
• Conditional Access
• Least-privilege permissions
• Separate administrator accounts
• Privileged Identity Management
• Network segmentation
• Security groups
• Encryption
• Endpoint protection
• Defender for Cloud
• Centralised logging
• Backup protection
• Vulnerability management
• Incident-response procedures

Security should be designed before migration rather than added after systems are live.

What Is an Azure Landing Zone?

An Azure landing zone is a structured foundation for deploying and managing Azure workloads.

It may define:

• Subscription structure
• Identity controls
• Network architecture
• Security policies
• Resource naming
• Logging
• Monitoring
• Cost management
• Backup standards
• Access permissions

Without a consistent foundation, different teams may create resources in incompatible or insecure ways.

A well-designed landing zone helps the organisation establish common rules before its Azure environment becomes difficult to manage.

Why Governance Matters

Azure makes it relatively easy to create resources.

That convenience can become a risk if employees can deploy services without appropriate oversight.

Poor governance can result in:

• Unexpected costs
• Inconsistent security
• Unclear ownership
• Forgotten systems
• Excessive permissions
• Unprotected data
• Duplicate resources
• Incomplete monitoring

Governance controls may include:

• Management groups
• Subscriptions
• Resource groups
• Azure Policy
• Role-based access control
• Naming standards
• Tags
• Budgets
• Spending alerts
• Approval processes

Every resource should have an identifiable owner and business purpose.

How Much Does Microsoft Azure Cost?

Azure does not have one fixed price.

Costs depend on the services selected and how they are configured and used.

Potential charging factors include:

• Processing capacity
• Memory
• Storage
• Database performance
• Data transfer
• Backup retention
• Number of users
• Monitoring data
• Security services
• Operating time
• Support arrangements

Microsoft provides an Azure Pricing Calculator to help estimate the cost of selected services. Its UK pricing guidance also highlights options such as reservations, savings plans and Azure Hybrid Benefit for qualifying scenarios. 

An estimate should include more than the obvious virtual-machine cost.

Businesses may also need to allow for:

• Backup
• Monitoring
• Security
• Data transfer
• Connectivity
• Licensing
• Management
• Support
• Disaster recovery
• Project work

Why Azure Costs Can Become Unpredictable

Unexpected bills may result from:

• Oversized virtual machines
• Resources left running unnecessarily
• Excessive log ingestion
• Large data transfers
• Duplicate storage
• Unused public IP addresses or disks
• Poorly designed applications
• Missing budgets and alerts
• Uncontrolled test environments

Cost management should be considered throughout the lifecycle of the service.

The Azure Well-Architected Framework treats cost optimisation as one of five essential architectural pillars alongside reliability, security, operational excellence and performance efficiency. 

The Five Pillars of a Well-Architected Azure Environment

Microsoft’s Azure Well-Architected Framework helps organisations assess the quality of cloud workloads.

It is based on five pillars.

Reliability

Can the service remain available and recover when a component fails?

This may involve:

• Redundancy
• Backup
• Availability zones
• Recovery planning
• Monitoring
• Testing

Security

Are identities, data, applications and infrastructure protected appropriately?

Security should cover prevention, detection and response.

Cost Optimisation

Is the organisation receiving appropriate value from the resources it operates?

This includes rightsizing, removing waste and selecting suitable pricing options.

Operational Excellence

Can the environment be deployed, monitored, maintained and improved consistently?

Automation, documentation and clear procedures are important.

Performance Efficiency

Can the workload meet its required performance while adapting to changes in demand?

This may involve scaling, testing and selecting appropriate services.

Microsoft recommends using these pillars to guide architectural decisions and workload reviews. 

Should You Move All Your Servers to Azure?

Not automatically.

Azure may be suitable for many workloads, but simply recreating every on-premises server in the cloud can be expensive and inefficient.

Each system should be assessed individually.

Options may include:

• Rehosting it in an Azure virtual machine
• Replacing it with a SaaS product
• Moving it to a managed Azure platform
• Redesigning the application
• Keeping it on-premises
• Retiring it completely

For example, an old file server may be better replaced with SharePoint and OneDrive than recreated as a Windows server in Azure.

A legacy application may need to remain on-premises until its supplier provides a supported upgrade.

The decision should reflect:

• Application compatibility
• Performance
• Security
• Cost
• Connectivity
• Compliance
• Business importance
• Supplier support

Azure and Hybrid Cloud

A hybrid-cloud environment combines Azure with on-premises systems or another cloud platform.

This may be appropriate when:

• Some applications cannot be migrated
• Manufacturing equipment requires local systems
• Data must remain close to a particular site
• The migration will happen in stages
• Internet disruption would affect critical operations
• A specialist application depends on local hardware

Hybrid environments can provide flexibility, but they may also increase management complexity.

The business must secure and monitor both the cloud and on-premises components.

Azure and Artificial Intelligence

Azure provides services for developing, hosting and integrating AI solutions.

Businesses may use Azure-based AI for:

• Document processing
• Customer support
• Data analysis
• Forecasting
• Image analysis
• Search
• Automation
• Internal assistants
• Application development

AI projects require more than access to a model.

Businesses must consider:

• Data quality
• Privacy
• Access control
• Accuracy
• Human review
• Cost
• Intellectual property
• Prompt injection
• Logging
• Regulatory responsibilities

Microsoft provides a separate shared-responsibility model for AI-enabled integrations because responsibilities vary according to how the AI service is delivered. 

Common Azure Migration Mistakes

Moving Without a Business Case

Cloud migration should solve a defined problem rather than simply follow a technology trend.

Copying Existing Problems

Poor permissions, unsupported software and inefficient processes should not be reproduced in Azure.

Failing to Estimate Costs Properly

A calculation that includes only compute and storage may overlook backup, monitoring, data transfer and security.

Ignoring the Shared-Responsibility Model

Microsoft does not automatically manage every operating system, account, application or backup.

Giving Excessive Administrator Access

Azure roles should be assigned according to least privilege.

Creating Resources Without Governance

Uncontrolled resource creation can lead to cost, security and ownership problems.

Assuming High Availability Means Backup

A service can be highly available and still contain deleted, corrupted or encrypted data.

Neglecting Monitoring

Performance and security alerts require clear ownership and response processes.

Failing to Train Internal Teams

Cloud environments require different skills from traditional server infrastructure.

Leaving Old Systems Running

After a migration, unnecessary legacy resources should be removed securely to avoid duplicated costs and risks.

How to Prepare for Microsoft Azure

Define Your Objectives

Understand why the business is considering Azure.

The aim might be to:

• Replace ageing servers
• Improve recovery
• Support remote working
• Host an application
• Improve scalability
• Enable AI
• Reduce dependence on one office

Assess the Existing Environment

Document:

• Servers
• Applications
• Databases
• Network dependencies
• User accounts
• Backups
• Security controls
• Performance requirements
• Supplier support

Review Connectivity

Cloud systems depend on reliable internet access.

The business may need:

• Faster connectivity
• A secondary internet service
• Improved Wi-Fi
• Updated firewalls
• Better network monitoring

Build a Cost Model

Estimate implementation and ongoing costs.

Include growth, backup, security, monitoring and technical support.

Design Security and Governance

Create access, network, logging and resource standards before deploying production workloads.

Test the Workload

Confirm:

• Performance
• Compatibility
• Security
• Backup
• Recovery
• User access
• Third-party integrations

Plan the Migration and Rollback

The project should describe how data and services will move and how the previous environment can be restored if a serious problem occurs.

Train Users and Administrators

Employees may need guidance on new access methods, while technical staff need the skills to operate and secure the platform.

Is Microsoft Azure Suitable for Small Businesses?

It can be, but Azure should be used selectively.

A smaller business might use Azure for:

• One specialist application
• Cloud backup
• Disaster recovery
• A virtual server
• Azure Virtual Desktop
• Secure application hosting
• Development and testing

It may not need a large or complicated Azure estate.

The right solution should be proportionate to the organisation’s requirements and internal resources.

A small business can face the same cost and security problems as a large organisation if Azure is poorly configured.

How Hamilton Group Can Help

Hamilton Group helps UK businesses plan, deploy, secure and manage Microsoft Azure solutions.

Our services can include:

• Azure readiness assessments
• Cloud migration planning
• Azure virtual machines
• Azure Virtual Desktop
• Azure Backup
• Disaster recovery
• Hybrid-cloud solutions
• Cloud networking
• Application hosting
• Microsoft Entra ID
• Multi-factor authentication
• Conditional Access
• Defender for Cloud
• Microsoft Sentinel
• Azure cost reviews
• Cloud security assessments
• Managed IT support
• Managed cybersecurity
• Microsoft 365 integration
• Infrastructure modernisation

We take the time to understand your current environment and business goals before recommending Azure services.

The aim is not to move every system into the cloud. It is to use the right technology where it provides clear operational, security or commercial value.

Build an Azure Environment That Supports Your Business

Microsoft Azure can provide a flexible foundation for infrastructure, applications, data, recovery, security and artificial intelligence.

However, Azure should not be treated as an automatic solution to every technology problem.

Successful adoption requires:

• Clear business objectives
• Accurate workload assessment
• Suitable architecture
• Strong identity security
• Reliable backup and recovery
• Cost management
• Governance
• Monitoring
• Ongoing technical management

The cloud can improve resilience and flexibility, but it must be designed and maintained properly.

To discuss Microsoft Azure or arrange a review of your current infrastructure, contact Hamilton Group on 0330 043 0069 and speak to one of our experts today.