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AWS (Amazon Web Services) vs GNAT Pro

AWS (Amazon Web Services) logo

AWS (Amazon Web Services)

Cloud

The leading cloud computing platform

From
Free
Free plan
Yes
Full reviewWebsite
GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only AWS (Amazon Web Services) has a free tier, so it costs nothing to try first.
  • Each has a real cost: AWS (Amazon Web Services) data transfer in is free and data transfer out is charged, which is the standard source of unexpected bills; GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which AWS (Amazon Web Services) and GNAT Pro actually diverge.

Attributes where AWS (Amazon Web Services) and GNAT Pro differ
AttributeAWS (Amazon Web Services)GNAT Pro
Starting priceFreeOn request
Pricing modelusage-basedquote
Free tierYesNo
PlatformsWeb, Api, Cli, MobileWeb
CategoryCloudDeveloper Tools
Founded2006Unknown

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in AWS (Amazon Web Services)

  • EC2 - Virtual Servers
  • S3 - Object Storage
  • RDS - Managed Database
  • Lambda - Serverless Computing
  • CloudFront - CDN
  • VPC - Virtual Network
  • IAM - Access Management
  • CloudWatch - Monitoring

Only in GNAT Pro

Nothing recorded that AWS (Amazon Web Services) does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

AWS (Amazon Web Services)

  • Web hostingnot GNAT Pro
  • Data storagenot GNAT Pro
  • Machine learningnot GNAT Pro
  • Big data analyticsnot GNAT Pro
  • Application developmentnot GNAT Pro

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot AWS (Amazon Web Services)
  • Developing automotive embedded systems with ISO-26262 compliancenot AWS (Amazon Web Services)
  • Integrating Ada, C/C++, and Rust components in single codebasenot AWS (Amazon Web Services)
  • Managing software supply chain vulnerabilities and SBOMsnot AWS (Amazon Web Services)
  • Supporting long-lived software systems spanning decadesnot AWS (Amazon Web Services)

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

AWS (Amazon Web Services)

  • Data transfer in is free and data transfer out is charged, which is the standard source of unexpected bills
  • Discounts require one or three year Savings Plan commitments rather than being automatic
  • Every service is priced separately, so a working architecture has no single published cost
  • The free tier is a promotional allowance rather than an ongoing free plan

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

Pricing, plan by plan

AWS (Amazon Web Services)

Free
  • AWS Free TierFree
    • EC2 750 hours/month
    • 5GB S3 storage
    • 20GB data transfer
  • Pay-As-You-GoFree
    • No upfront payment
    • No long-term commitments
    • Pay only for what you use

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Which should you pick?

Choose AWS (Amazon Web Services) if

  • You need ec2 - virtual servers.
  • You want to start without paying.
  • You work on Web, Api, Cli, Mobile.
  • You also want s3 - object storage.
AWS (Amazon Web Services) review

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from AWS (Amazon Web Services) on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Questions people ask

Is AWS (Amazon Web Services) or GNAT Pro better?
Neither clearly leads. AWS (Amazon Web Services) starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AWS (Amazon Web Services) or GNAT Pro?
AWS (Amazon Web Services) has a free tier; the other does not. Paid plans start at Free for AWS (Amazon Web Services) and On request for GNAT Pro.
Does AWS (Amazon Web Services) or GNAT Pro run on more platforms?
AWS (Amazon Web Services) runs on Web, Api, Cli, Mobile. GNAT Pro runs on Web.
Can I use AWS (Amazon Web Services) for free?
Yes. AWS (Amazon Web Services) has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is AWS (Amazon Web Services) best used for?
AWS (Amazon Web Services) is most often used for web hosting, data storage, machine learning, big data analytics. Of those, web hosting and data storage are not what GNAT Pro is typically brought in for.
What can AWS (Amazon Web Services) do that GNAT Pro cannot?
AWS (Amazon Web Services) covers EC2 - Virtual Servers, S3 - Object Storage, RDS - Managed Database, Lambda - Serverless Computing.

Answered from the vendors’ own pages

AWS (Amazon Web Services): What are AWS's payment options and pricing models?

AWS offers four pricing approaches: pay-as-you-go (you pay only for what you use), flat-rate plans combining multiple services into one monthly price without overages, Savings Plans offering discounts on compute and machine learning with 1- or 3-year commitments, and volume-based tiered pricing where costs decrease as usage increases.

Source
GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
AWS (Amazon Web Services): Are there contracts, termination fees, or commitments required for AWS?

No long-term contracts are required for AWS services. No termination fees apply once you stop using the service. Savings Plans provide optional 1- or 3-year commitments with discounted hourly rates, but you can revert to pay-as-you-go pricing anytime.

Source
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
AWS (Amazon Web Services): Does AWS offer a free tier?

AWS provides a free tier that offers hands-on experience with AWS products at no charge. The free tier allows new customers to try eligible services before committing to paid usage.

Source
AWS (Amazon Web Services): How do I estimate my AWS costs?

AWS provides the AWS Pricing Calculator and Cost Explorer tool to estimate costs for single or multiple services. AWS also offers cost optimization recommendations, performance reporting, and budget alerts to help track and control spending.

Source
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