What's the most expensive cloud mistake you've seen?

[aenawi]

Most infrastructure regret comes from unexamined assumptions, not bad technology.

We've all been there:

• "I thought egress was negligible"
• "We didn't account for cross-AZ traffic"
• "Support plans added 15% we didn't model"

Share your story:

• What was the infrastructure decision?
• What assumption turned out to be wrong?
• How much did it cost (roughly)?
• What would have helped you catch it earlier?

These stories help us understand which hidden costs matter most.