TL;DR: Most Australian SMBs should be cloud-first by default. The cost, reliability, and security advantages of cloud services outweigh on-premise infrastructure for businesses under 200 staff in almost all scenarios. This guide helps you decide what to migrate, evaluate providers, and plan a migration without disrupting your team.
The Case for Cloud in 2026
The debate about whether Australian businesses should move to the cloud is over. The question now is which workloads belong in the cloud, how to migrate them successfully, and how to govern cloud services once they are running.
The cloud adoption figures speak for themselves: the majority of Australian businesses now use cloud services for at least email and file storage. For SMBs, the business case is overwhelming:
Cost: On-premise servers require hardware investment, power and cooling, software licences, maintenance contracts, and the IT labour to manage them. Cloud services convert this to a predictable per-user monthly subscription. For most businesses under 100 staff, cloud is cheaper.
Reliability: Microsoft Azure and AWS data centres operate at 99.9%+ uptime with redundant power, cooling, and network connections. Your server room does not. A fire, flood, power outage, or hardware failure at your premises takes down on-premise infrastructure; it does not affect cloud services.
Security: Major cloud providers invest more in security than any SMB could justify spending on on-premise infrastructure. Microsoft employs thousands of security professionals, operates multiple threat intelligence networks, and applies machine learning to detect attacks in real time. None of this is available to an on-premise environment.
Mobility: Cloud services work from anywhere. On-premise servers require VPN, remote desktop, or file synchronisation tools to access remotely - all of which add complexity and potential security risk.
What Should Go to the Cloud
Email and Calendar (Priority 1)
Every Australian business should have email and calendar in the cloud. The options are Microsoft 365 and Google Workspace. For most Australian businesses with 10+ staff, Microsoft 365 Business Premium is the right choice.
Microsoft 365 Business Premium includes:
- Exchange Online (email and calendar)
- Teams (chat, video, phone)
- SharePoint and OneDrive (file storage and collaboration)
- Office applications (Word, Excel, PowerPoint, Outlook)
- Microsoft Defender for Business (endpoint security)
- Microsoft Intune (device management)
- Azure AD P1 (identity and access management)
All of this for approximately $28/user/month in Australia.
Action: If you are still running on-premise Exchange, migrate to Exchange Online immediately. On-premise Exchange is a major security risk - it is the most targeted server type in SMB ransomware attacks and requires continuous patching to remain secure.
File Storage and Collaboration (Priority 2)
Replace on-premise file servers with SharePoint Online and OneDrive. The benefits:
- Files accessible from anywhere on any device
- Automatic version history (never lose work again)
- Real-time co-authoring (multiple people editing the same document simultaneously)
- Sharing with external parties without VPN
- No hardware to maintain, no storage limits to manage
- Integrated with Teams for contextual file access
The migration challenge: File server migrations require planning. A disorganised file server will become a disorganised SharePoint. Use the migration as an opportunity to restructure your information architecture. See the SharePoint section of Microsoft 365 Hidden Features Guide for best practices.
Line-of-Business Applications (Priority 3)
Most modern business applications are SaaS-first: Xero, MYOB AccountRight Live, Salesforce, HubSpot, Practice Ignition, Deputy, Employment Hero, and thousands of others. If you are running a legacy on-premise version of a business application that has a cloud equivalent, evaluate migration.
Evaluation criteria:
- Does the cloud version match the feature requirements of your role?
- What is the cost comparison (licence cost vs on-premise total cost of ownership)?
- What does the data migration look like?
- What training is required?
Backups (Priority 4)
Cloud backup is more reliable, more cost-effective, and more recoverable than most on-premise backup solutions.
Microsoft 365 Backup: Microsoft 365 data (email, SharePoint, OneDrive, Teams) requires a dedicated backup solution - Microsoft’s built-in retention policies are not a backup. Tools like Veeam Backup for Microsoft 365 or Acronis Cyber Protect provide proper backup and recovery capability.
Server backup to cloud: If you still have on-premise servers, back them up to cloud using immutable cloud storage (Azure Blob Storage, AWS S3, Backblaze B2). This ensures at least one backup copy survives a ransomware attack or physical disaster at your premises.
Phone System (Priority 5)
Moving from an on-premise PBX to Microsoft Teams Phone or a cloud VoIP system eliminates hardware maintenance, provides geographic flexibility, and integrates with your Microsoft 365 environment.
See VoIP & Business Phone System Guide for a full migration guide.
What Might Stay On-Premise
Not everything belongs in the cloud. There are legitimate reasons to keep some workloads on-premise, at least temporarily:
Specialised hardware-dependent applications: CAD/CAM software connected to CNC machines, medical device software connected to diagnostic equipment, industrial control systems. These may have specific hardware requirements that preclude cloud deployment.
Very high-performance local processing: Video editing, 3D rendering, and similar workflows that generate large files locally may be more efficiently processed on local hardware than through a cloud connection.
Regulatory data sovereignty requirements: Some regulated industries have requirements for data to remain onshore or in specific locations. Most major cloud providers (Microsoft Azure, AWS, Google Cloud) have Australian data regions that satisfy these requirements for most use cases - check the specific regulation before assuming cloud is not permitted.
Legacy applications that cannot migrate: Some business-critical applications have no cloud equivalent, are too expensive to migrate, or are scheduled for replacement. These may remain on-premise while the transition to a replacement is planned.
The default position should be: cloud unless there is a specific, documented reason to stay on-premise. “We’ve always had a server” is not a reason.
Evaluating Cloud Providers
The Three Tier-1 Providers
Microsoft Azure / Microsoft 365: The dominant choice for Australian SMBs. Deeply integrated with Microsoft 365, Teams, and the entire Microsoft ecosystem. Best choice if your business uses Microsoft Office applications and Windows. Australian data regions in Sydney and Melbourne.
Amazon Web Services (AWS): The largest cloud provider by market share. Best for businesses building custom applications, running complex infrastructure, or requiring the broadest range of cloud services. Less relevant for most SMBs whose primary cloud needs are email and file storage.
Google Cloud / Google Workspace: A viable alternative to Microsoft 365 for email, file storage, and collaboration. Better fit for businesses with a strong Google ecosystem preference. Australian data region available.
What to Look for in a Cloud Provider
Data residency: Where is your data physically stored? For Australian businesses, data stored in Australian Azure or AWS regions satisfies most regulatory requirements. Confirm with your legal counsel for specific regulated industries.
Compliance certifications: ISO 27001, SOC 2 Type II, and industry-specific certifications (IRAP for Australian Government requirements) indicate the provider’s security posture.
SLA: What uptime does the provider guarantee, and what are the credits for non-compliance? Microsoft 365 offers a 99.9% monthly SLA.
Support: What support is included with your subscription? What does it cost to escalate to a real person? What are the support response times?
Pricing transparency: Cloud pricing complexity is a feature, not a bug - from the provider’s perspective. Understand exactly what you are paying for and what additional costs may appear.
Planning a Cloud Migration
Phase 1: Audit
Before migrating anything, understand what you have:
- Inventory all applications currently running on-premise
- Document all data repositories and their sizes
- Identify data dependencies (what applications access what data?)
- Identify all users and their current access levels
- Document all integrations between systems
Phase 2: Prioritise
Not everything migrates at once. A typical sequence:
- Email and calendar (quick wins, immediate security improvement)
- File storage and collaboration
- Backup (move backup targets to cloud)
- Line-of-business applications (assess individually, migrate one at a time)
- Phone system
- Decommission remaining on-premise infrastructure
Phase 3: Prepare
For each migration workload:
- Define the target state (what does the cloud environment look like?)
- Document the migration method (lift and shift, refactor, or replace?)
- Identify the migration window (when can this happen with minimum disruption?)
- Define the rollback plan (what happens if the migration fails?)
- Brief affected users on what is changing and when
Phase 4: Migrate
Execute migrations in the planned sequence. For file server migrations:
- Pre-sync large datasets before the cutover window
- Schedule final sync and cutover for a low-activity period
- Redirect users to new cloud location
- Leave old system in read-only mode for 30 days before decommissioning
Phase 5: Govern
Cloud services require ongoing governance:
- Regular review of access permissions (who has access to what?)
- Monitoring of cloud spend (cloud costs can grow unexpectedly)
- Security review of cloud configurations (misconfigured cloud storage is a leading cause of data breaches)
- Regular review of software subscriptions - cancel unused services
Common Cloud Migration Mistakes
Migrating a mess: A disorganised on-premise file server becomes a disorganised SharePoint. Use the migration as an opportunity to restructure information architecture.
Insufficient bandwidth: Cloud applications require good internet. Assess bandwidth before migrating and upgrade if necessary. See Business Internet Buyers Guide.
Skipping the governance step: Cloud without governance creates shadow IT (staff using unapproved services), security risks (misconfigured permissions), and uncontrolled costs (services proliferating without oversight).
Underestimating change management: The technology migration is usually straightforward; getting people to work differently is harder. Budget for training, communication, and a sustained change management effort.
Not backing up cloud data: Cloud providers protect their infrastructure - they do not protect your data from accidental deletion, malicious deletion by a disgruntled employee, or ransomware that encrypts your Microsoft 365 account. Back up your cloud data.
Getting Started
The best starting point for most Australian SMBs is Microsoft 365 Business Premium. It provides email, file storage, collaboration, device management, and security in a single subscription - and it is the foundation on which most cloud migrations are built.
If you want help planning your cloud migration or assessing which cloud services make sense for your business, get your instant IT price with CX IT Services. We plan and execute cloud migrations for Melbourne businesses every week.
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