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Finance asks why we pay for VPC endpoints when a NAT gateway already exists. What is the honest answer?

Gateway endpoints avoid NAT processing for supported traffic. Interface endpoints have hourly and processing fees; cost savings depend on traffic, while access restrictions need explicit policies.

Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

Gateway endpoints avoid NAT processing for supported traffic. Interface endpoints have hourly and processing fees; cost savings depend on traffic, while access restrictions need explicit policies.

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