Australian Cloud Adoption in 2026: AWS, Azure, and the AUKUS Sovereign Considerations
Australia's cloud market has been hyperscaler-dominant. Where AWS, Azure, GCP sit in 2026, plus the sovereign cloud considerations under AUKUS.
Australian cloud spend crossed AU$15 billion in 2025 and is on track for continued double-digit growth into 2026. The hyperscaler footprint is mature with multiple regions and substantial capacity. The sovereign considerations have intensified under the AUKUS framework, particularly for defense and national-security-adjacent workloads.
I want to walk through where the Australian cloud market actually sits.
The hyperscaler shares#
AWS is the share leader with 40-48%. AWS Sydney has been operational since 2012; AWS Melbourne added in 2022. Strongest in digital-native enterprise, fintech, and increasingly mid-market.
Microsoft Azure is the close second with 28-34%. Azure Sydney and Azure East (Melbourne) plus Azure South-East (Victoria) provide capacity. Strongest in enterprise with Microsoft relationships and increasingly in government.
Google Cloud is third with 12-17%. Sydney region; Melbourne added recently. Growing presence particularly in data/AI-led organizations.
Oracle Cloud has meaningful share in BFSI and broader regulated entities.
Domestic and specialist clouds — Macquarie Telecom Group (with the substantial Macquarie Government division), Vault Cloud, and others — round out the remainder.
IRAP and government cloud#
The Information Security Registered Assessors Program (IRAP) — operated by the Australian Signals Directorate — provides the formal assurance framework for government cloud:
- PROTECTED classified workloads have specific IRAP-assessed cloud services available.
- OFFICIAL workloads have broader availability.
- The hyperscalers’ AU regions are IRAP-assessed for various classifications.
- Specific sovereign offerings for the most-classified workloads.
The Hosting Certification Framework (HCF) plus the various security-classified-cloud frameworks define the procurement and operational expectations for government cloud.
AUKUS sovereign considerations#
The AUKUS technology cooperation between Australia, US, and UK has produced specific sovereign-cloud considerations:
- Cross-allied technology sharing under defined frameworks.
- Sovereign Australian operations for certain workloads.
- Specific cloud capacity dedicated to AUKUS-relevant work.
The defense industry’s cloud adoption has been substantial in 2024-2026 with specific arrangements for the more-sensitive workloads.
What enterprise procurement looks like#
For an Australian enterprise in 2026:
- Pick a primary hyperscaler based on workload fit.
- IRAP / HCF compliance for government engagements.
- Multi-region within Australia for resilience.
- AUKUS-specific arrangements if defense-adjacent.
- AUD-denominated contracts where possible.
What’s coming in 2026 and 2027#
Three things to watch:
Sovereign cloud expansion under AUKUS continues.
The Critical Infrastructure framework affects cloud usage in various sectors.
Multi-region AU capacity expansion continues across hyperscalers.
Where pdpspectra fits#
Our cloud architecture work spans Australia. We work with enterprises on cloud strategy, migration, and operational compliance.
Related reading: the UK cloud adoption post, the India cloud adoption post, and the Japan cloud adoption post.
Australian cloud is mature with specific sovereign overlays. Talk to our team about your architecture.