Egress Fees
ELI5 — The Vibe Check
Egress fees are what cloud providers charge when data leaves their network. Send a file to a user? Egress fee. Replicate to another cloud? Egress fee. It's the most hated line item on every cloud bill. AWS charges ~$0.09/GB for data out, which sounds small until you're serving terabytes of video. This is why Cloudflare R2 exists.
Real Talk
Egress fees are charges applied to data transferred out of a cloud provider's network to the internet or other clouds. They're a significant cost factor in cloud architectures, especially for data-intensive applications. Rates vary by provider and volume (typically $0.05-0.12/GB). Strategies to minimize egress include CDNs, edge caching, and providers with free egress like Cloudflare R2.
When You'll Hear This
"Our monthly AWS egress fees are $15K — we need a CDN in front of S3." / "We chose R2 over S3 specifically because of zero egress fees."
Related Terms
CDN (Content Delivery Network)
A CDN is a network of servers spread around the world that store copies of your files.
Cloudflare R2
R2 is Cloudflare's S3-compatible object storage with one killer feature: zero egress fees. Every time you read data from S3, AWS charges you.
Data Transfer Pricing
Data transfer pricing is how cloud providers charge you for moving data in and out. Data IN is usually free (they want your data!).
FinOps
FinOps is the practice of bringing financial accountability to cloud spending.
S3 (Simple Storage Service)
S3 is Amazon's giant file locker in the sky.