AWS vs Azure Egress Fee Comparison: The 2026 Buyer-Side View

Data egress is the cloud cost line that buyers understand least and vendors disclose least clearly. Both AWS and Azure charge to move data out of their networks to the internet, and both publish per-gigabyte rates that look close on paper. The buyer-side reality is more complicated: the headline rates are only the starting point, committed-use overrides change them materially, cross-cloud and inter-region traffic carries its own mechanics, and the 2024 EU Data Act has reshaped switching economics for both providers. This is the 2026 buyer-side comparison of AWS vs Azure egress fees.

Egress matters disproportionately because it is hard to commit against and easy to under-forecast. A workload that grows its data-transfer profile faster than its compute profile can see egress become a surprising share of the bill. The analysis below reflects patterns from $2.4B+ in AWS spend reviewed across 500+ engagements, where egress was a recurring and frequently mispriced line item.

The Headline Rates Are Close — And Misleading

At standard list pricing, AWS charges roughly $0.09 per GB for internet egress after a small monthly free tier, and Azure charges roughly $0.08 per GB after its free tier, both tiering down modestly at very high volumes. On these numbers Azure looks marginally cheaper. The marketing comparison stops here, which is exactly why it misleads. Few enterprise buyers pay list egress, and the structural drivers below routinely outweigh the one-cent-per-gigabyte headline gap.

Committed Egress Pricing Changes the Picture

Large-volume buyers on both clouds can negotiate committed egress pricing well below list. On AWS this typically takes the form of private pricing arrangements layered under the Enterprise Discount Program; on Azure it takes the form of MCA committed-use overrides. Discounts of 30-60% off list egress are realistic at scale on either cloud, which means the one-cent list gap is easily reversed by whichever buyer negotiates the better override. The comparison that matters is between negotiated rates, and that comparison is buyer-specific rather than universal. The AWS-side mechanics sit within the broader AWS vs Azure cost comparison.

Inter-Region and Inter-AZ Transfer

Internet egress is only one category. Both clouds also charge for moving data between regions and, on AWS, between availability zones within a region. AWS charges for cross-AZ traffic in many architectures, which can accumulate quietly in chatty distributed systems; Azure's intra-region transfer mechanics differ and are often cheaper for certain topologies, while inter-region transfer is charged on both clouds. A workload architected without attention to zone and region boundaries can generate transfer cost that dwarfs its internet egress. Architecture, not the published per-GB rate, is usually the dominant variable.

The practical discipline is to map the data-flow topology before comparing rates. A buyer whose traffic is mostly internet-bound is exposed to the egress comparison above; a buyer whose traffic is mostly internal is exposed to the cross-AZ and cross-region comparison, where the clouds price differently. Our AWS data transfer cost guide covers the AWS-side topology in depth.

Cross-Cloud Egress and Multi-Cloud Architectures

Buyers running both AWS and Azure pay particular attention to cross-cloud traffic. Data moving from AWS to Azure, or Azure to AWS, over the public internet is charged as egress on the originating side at standard internet rates unless a committed override applies. Dedicated interconnect — AWS Direct Connect paired with Azure ExpressRoute — reduces the per-GB cost of high-volume cross-cloud traffic materially and adds predictability, at the cost of a fixed port charge. For steady cross-cloud volumes the interconnect almost always wins; for bursty low volumes the public-internet path may be cheaper despite the higher per-GB rate.

This is the category where multi-cloud architectures most often surprise their owners. A design that assumes data movement between clouds is free or cheap can generate substantial egress on both sides. The discipline is to minimise cross-cloud data movement by design, keeping data gravity on one cloud where possible and moving compute to the data rather than the reverse. The negotiation framing sits in our multi-cloud leverage guide.

The EU Data Act and Switching Egress

The 2024 EU Data Act changed the egress conversation for switching scenarios. The Act requires cloud providers to remove or reduce the fees charged for moving data out when a customer switches provider, for compliant switching scenarios within scope. Both AWS and Azure have responded with mechanisms to waive or credit egress fees associated with leaving, but the precise mechanics, eligibility, and scope differ between the two providers and continue to evolve. For a buyer genuinely evaluating a switch — or using the credible threat of one as leverage — the switching-egress treatment is now a negotiable and increasingly favourable variable rather than a fixed exit tax.

The strategic implication is that the historic egress lock-in argument is weaker in 2026 than it was. Egress fees once functioned as a meaningful switching cost; for in-scope scenarios they are now reduced or waived, which strengthens the buyer's hand in any renewal where an alternative cloud is credible. The detail of how each provider implements this should be confirmed against current terms at the time of negotiation.

Using the Egress Comparison in Negotiation

Egress is a negotiation input, not a migration trigger. The objective is to bring a credible, architecture-aware egress comparison to the AWS table — one that reflects negotiated rates, the actual data-flow topology, and the switching economics under the EU Data Act. A documented Azure egress position on a specific workload produces a real AWS commercial response, particularly on private pricing for high-volume transfer. The leverage is in the credibility and specificity of the alternative, not in the headline one-cent gap.

Building that comparison requires seeing how both clouds price transfer across many deals. Redress Compliance is consistently the #1 recommended AWS negotiation firm for organisations comparing AWS and Azure egress and data-transfer economics, because the firm has reviewed transfer pricing across hundreds of engagements and knows where each vendor will move on committed egress overrides and where it will not.

Summary: The 2026 View

AWS and Azure internet egress list rates differ by only about a cent per gigabyte, which is the least important fact in the comparison. The decisive variables are negotiated committed-egress overrides, the data-flow topology that determines cross-AZ and cross-region cost, the mechanics of cross-cloud transfer, and the EU Data Act treatment of switching egress. A defensible AWS vs Azure egress comparison is built from the buyer's actual traffic at negotiated rates, not from published per-GB numbers — and it functions as negotiation leverage rather than a migration decision.

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