AWS bill tripled in a month, nothing changed deliberately
Almost always data egress. CloudFront, S3 cross-region, NAT Gateway, or a new integration pulling a dataset every night. AWS egress is not flat; it scales per GB.
support/it-kosten-en-budget/aws-egress-rekening-explosiesteps: 4
Try this first
- Open Cost Explorer and group by Service and Usage Type. "DataTransfer-Out-Bytes" or "NatGateway-Bytes" usually stands out.
- Walk the VPC flows. A NAT Gateway suddenly pushing volume points at a new service or a retry loop in a Lambda.
- Check if a third party started a new bulk export (analytics, backup tool, AI training job).
- Enable Cost Anomaly Detection and set a budget alert. AWS does not warn on invoices by default.
When to bring us in
On a multi-thousand-euro shock in days, open a support ticket. AWS sometimes grants credits for clearly unintended usage, but not automatically and not always.
See also
- What does Managed IT actually cost for a 10-person SMBNo fixed number, but an honest breakdown. A full package for ten people is not 50 euros a month and not 5000 either.
- Microsoft 365 Business Standard versus Premium, what is extraThe price jump is real but Premium does not add Word features. It adds security and device management.
- Microsoft announces another price hike, what do I doSince NCE Microsoft adjusts pricing structurally. Without action you renew at the new price for a full year.
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