Sydney vs Melbourne: Which AWS Region Should Your Australian Startup Use?
Australia now has two full AWS Regions. For a startup choosing where to build, the decision comes down to service breadth, latency and how you plan to handle disaster recovery — not marketing. Here is a practical way to decide.
For most of the last decade, an Australian startup on AWS had one obvious home: the Asia Pacific (Sydney) Region. That changed when AWS opened a second Australian Region in Melbourne, giving founders a genuine in-country choice — and, for the first time, the option of running disaster recovery across two Regions without leaving Australia.
Australia's two AWS Regions
Asia Pacific (Sydney) — ap-southeast-2
The long-established Australian Region, with three Availability Zones and the broadest AWS service catalogue in the country. If a newer AWS service exists in Australia, it almost always lands in Sydney first.
Asia Pacific (Melbourne) — ap-southeast-4
Australia's second Region, also with three Availability Zones. Its service catalogue is growing steadily but is not yet as complete as Sydney's. Its main value today is a second in-country location for resilience and data-sovereignty-constrained DR.
How to actually choose
Four questions settle it for almost every startup:
- Do you need the newest services? If your product depends on the latest AWS AI, analytics or database services, check they are available in your chosen Region first. Sydney has the widest coverage; verify Melbourne before committing to it for a specific service.
- Where are your users? Both Regions serve the whole of Australia with low latency, so for a nationwide user base this rarely decides it. A workload heavily concentrated in Victoria may shave a few milliseconds in Melbourne — usually not decisive on its own.
- What does your disaster-recovery story need to be? This is the real change. You can now run production in one Australian Region and DR in the other, keeping all data onshore. Before Melbourne, cross-Region DR meant sending data offshore — a problem for data-sovereignty-sensitive customers.
- Do you have data-residency obligations? Both Regions keep data in Australia, which supports obligations under the Privacy Act 1988 and the Australian Privacy Principles. Either Region satisfies "data stays in Australia"; the choice is about services and DR, not compliance.
Rule of thumb: build in Sydney for the widest service coverage, and use Melbourne as your second Region for in-country disaster recovery. Reverse it only if you have a specific Melbourne-side reason — a key customer, a latency-sensitive Victorian user base, or a contractual DR requirement.
Cost is the same lever it always is
Region choice has a pricing dimension, but for an early-stage startup the bigger cost lever is AWS Activate credits, which apply across Regions. Architecting well from day one — right-sizing, using managed services, and not over-provisioning "just in case" — will move your bill far more than picking Sydney over Melbourne.
Australian startup? Through ROSTAN, an AWS Activate Provider, qualifying Australian startups can access up to US$100,000 in AWS Activate credits — application, account setup and architecture help delivered remotely to your business hours. See our AWS startup credits page for Australia.
Setting up AWS for your Australian startup?
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