The cloud pricing comparison you see in vendor marketing is almost always wrong — not because vendors are lying, but because they are comparing the wrong things. Here is what the pricing pages do not show you, based on real bills we have reviewed for clients running workloads on OCI, AWS, and Azure.
The Egress Problem Nobody Advertises
Every major cloud charges for data leaving their network — called egress or data transfer out. For a typical enterprise application moving 50 TB of data per month out of the cloud (to branch offices, reporting systems, third-party APIs), the egress cost alone on AWS runs to approximately $4,500 per month. Azure charges similarly. Oracle Cloud Infrastructure charges zero for ingress and egress to the internet. That one line item changes the economics for any data-intensive workload.
Compute: The Benchmark That Matters
OCI’s standard compute pricing for an E4.Flex instance (16 OCPU, 128 GB RAM) runs approximately $614 per month on pay-as-you-go. The equivalent AWS c6i.8xlarge (32 vCPU, 64 GB RAM) costs approximately $1,100 per month. But the comparison is not just price-per-vCPU — OCI’s flexible shapes allow you to choose exact CPU-to-memory ratios, eliminating the over-provisioning that cloud bills hide in fixed instance families.
For Oracle Database workloads specifically, OCI’s Autonomous Database includes automatic indexing, automatic vacuuming, and automatic patching. The DBA hours saved typically represent 30–40% of a database administrator’s annual cost — a saving that does not appear on any benchmark report.
Storage: Where AWS Margins Are Built
AWS S3 standard storage costs $0.023 per GB. OCI Object Storage costs $0.0255 per GB — marginally more. But S3 charges $0.0004 per 1,000 GET requests and $0.005 per 1,000 PUT requests. For an application making 100 million API calls per month, that is $400 in API request charges alone on top of storage costs. OCI’s API request pricing is zero.
The Committed Use Reality
AWS and Azure’s Reserved Instance and Savings Plan models require 1–3 year commitments with complex coverage rules. OCI’s Universal Credits model lets you pre-purchase cloud credits that apply to any OCI service — compute, storage, database, networking — without specifying instance types at purchase time. For businesses whose workload mix evolves, this flexibility has genuine commercial value.
When AWS or Azure Is Still the Right Answer
OCI’s service catalogue, while growing rapidly (200+ services), is not as broad as AWS’s 250+ services. If your architecture depends on specific AWS services — SageMaker for ML pipelines, Kinesis for streaming analytics, or a deep Kubernetes ecosystem built on EKS — migrating those workloads to OCI introduces re-architecture risk that may not be worth the cost saving.
Azure’s Active Directory integration remains the most mature identity platform for Microsoft-centric enterprises. If your organisation runs Microsoft 365, Teams, and Dynamics 365, Azure’s native integration reduces identity management complexity significantly.
Our Recommendation
For Oracle Database workloads, Oracle Fusion Cloud customers, and any workload with significant egress volume — OCI wins the cost comparison decisively. The 50% lower cost claim in Oracle’s marketing is conservative for these use cases; we have seen 60–70% reductions in actual client bills. For general-purpose cloud workloads without Oracle affinity, AWS and Azure remain competitive and their broader ecosystems justify the premium for most enterprise teams.
TechnowayIT’s cloud practice specialises in OCI migrations and hybrid cloud architecture. We offer a free cloud cost analysis comparing your current AWS or Azure bill against an equivalent OCI configuration. Contact info@technowayit.com to get started.