TL;DR: AWS VPC endpoint pricing depends on endpoint type, number of Availability Zones, data processing, and whether you are replacing NAT gateway traffic. Interface endpoints usually have hourly and data-processing charges. Gateway endpoints for S3 and DynamoDB are different. Always model endpoint count by service, environment, and AZ before assuming endpoints are cheaper.
Why This Topic Matters
Your Search Console screenshot shows impressions for "vpc endpoint pricing" and "aws vpc endpoint pricing." These are valuable queries because they often come from engineers or CTOs actively designing AWS infrastructure.
AWS states that interface endpoints are billed for hourly usage and data processing. AWS also documents NAT gateway hourly and data processing charges separately, so the real question is not "are endpoints cheap?" but "which traffic should avoid NAT and which endpoints are worth the fixed hourly cost?"
VPC Endpoint Types
| Endpoint Type | Used For | Pricing Shape |
|---|---|---|
| Gateway endpoint | S3 and DynamoDB | no hourly charge for the endpoint itself |
| Interface endpoint | Most AWS services and PrivateLink services | hourly per endpoint/AZ plus data processing |
| Gateway Load Balancer endpoint | appliance/service insertion | service-specific networking cost model |
What Drives Interface Endpoint Cost
| Driver | Why It Changes Cost |
|---|---|
| Number of services | each service endpoint can add hourly cost |
| Number of AZs | endpoint ENIs are created per selected subnet/AZ |
| Number of environments | dev, staging, prod multiply endpoint count |
| Data processed | high throughput can materially change the bill |
| Cross-region access | remote-region PrivateLink has separate pricing considerations |
Simple Cost Thinking
Use this rough planning formula:
monthly endpoint cost =
endpoint hourly price
x hours per month
x number of AZs
x number of services
x number of environments
+ data processing charges
Do not forget non-production environments. A design that looks cheap in one VPC can become expensive when repeated across dev, staging, preview, and production accounts.
VPC Endpoint vs NAT Gateway
| Question | VPC Endpoint May Help | NAT Gateway May Be Simpler |
|---|---|---|
| Accessing S3 or DynamoDB? | Yes, use gateway endpoints first | Usually unnecessary for that traffic |
| Accessing many AWS APIs privately? | Maybe, model endpoint count | Maybe, if traffic is low and services are many |
| Reducing public internet exposure? | Strong fit | NAT still reaches public endpoints |
| Many services across many AZs? | Can become expensive | Can be cheaper or simpler in some cases |
| Need private SaaS/provider access? | PrivateLink can be the right design | NAT does not provide PrivateLink semantics |
Cost Control Checklist
- Start with S3 and DynamoDB gateway endpoints where applicable.
- Count services per VPC, not just endpoint type.
- Count AZs and environments.
- Model hourly cost before data processing.
- Route only the traffic that needs private service access.
- Consolidate endpoint strategy across accounts where possible.
- Monitor actual data processing after launch.
- Review whether every service endpoint is still needed quarterly.
Common Mistakes
- creating endpoints for every AWS service "just in case",
- duplicating full endpoint sets in every environment,
- ignoring AZ multiplication,
- replacing NAT without checking non-AWS outbound traffic,
- missing DNS behavior and private hosted zone implications,
- not tagging endpoints for cost attribution.
When SoftwareCrafting Can Help
We help teams design AWS infrastructure that balances security, cost, reliability, and operational simplicity. If your AWS networking bill is unclear, start with our DevOps and cloud deployment services or request a software audit.
Sources
Frequently Asked Questions
Are VPC endpoints free?
Gateway endpoints for S3 and DynamoDB do not have the same hourly endpoint charge model as interface endpoints. Interface endpoints generally have hourly and data-processing charges.
Are VPC endpoints always cheaper than NAT gateways?
No. They can reduce NAT traffic and improve private access, but many interface endpoints across services, AZs, and environments can become expensive.
What is the biggest hidden cost?
Endpoint multiplication across services, Availability Zones, VPCs, and environments is the cost many teams underestimate.
Should every private subnet use endpoints?
Not automatically. Use endpoints where the security, routing, and cost tradeoff is justified.
Can SoftwareCrafting review AWS endpoint costs?
Yes. We can audit VPC design, NAT usage, endpoint count, routing tables, and monthly cost drivers.