
VatStack
vatlayer API
Taxid.dev
VIESAC
Lookuptax
VATnode.dev
The VAT API
Justaxit validates lists of EU VAT, UK EORI and South African VAT numbers in bulk against VIES, HMRC and SARS, returning company names, addresses and exportable results.

Amazon API Gateway
Amazon S3
Google App Engine
DynamoDB
Google Cloud Functions
Amazon AWS
AWS Elastic Beanstalk
Automatic, event-driven compute service

Which is more popular?
Based on our record, AWS Lambda seems to be more popular. It has been mentioned 297 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | app.justaxit.com | aws.amazon.com |
| Pricing | ||
| Company | Startup from Poland · 1 - 9 employees | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Checking a supplier list against the EU VIES website means pasting one VAT number at a time, waiting, copying the result back into Excel, and repeating it a few hundred times. Justaxit turns that into one paste and one click. Paste a column of VAT numbers straight from Excel and Justaxit...
No description of AWS Lambda yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Justaxit yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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AWS Lambda Vs EC2 | Serverless Vs EC2 | EC2 Alternatives
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Justaxit and AWS Lambda. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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AWS Lambda is suitable for applications with varying workloads and those already using the AWS ecosystem.
Recommendations tracked on public social media and blogs since March 2021.


Tracking Justaxit since Sep 2026.
AWS Lambda is a service that runs your code without you managing any servers. You write your code, deploy it to Lambda, and it takes care of the infrastructure — servers, networking, security, and scaling. - Source: dev.to / 5 months ago
Clay can replace the Lambda and API chain if you'd rather avoid custom code. You set up a Clay table as the enrichment layer, trigger it from Segment via webhook, and it handles the waterfall and CRM push without writing a function. The... - Source: dev.to / 5 months ago
To show why this matters, take a look at the following example. I have three AWS Lambda functions, Lambda being the serverless compute service, that each handle a different endpoint on the same API. But, almost everything about them is... - Source: dev.to / 5 months ago
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Amazon S3 is an object storage where users can store data from their business on a safe, cloud-based platform. Amazon S3 operates in 54 availability zones within 18 graphic regions and 1 local region.
Compare Amazon S3 to Justaxit or AWS Lambda:

TaxID is a developer-first API to validate VAT and tax IDs across 31 countries — 27 EU member states via VIES, plus UK, Switzerland, Norway, and Australia. Stripe-style errors, JSON responses, 100 free validations/month.
Compare Taxid.dev to Justaxit or AWS Lambda:

A powerful platform to build web and mobile apps that scale automatically.
Compare Google App Engine to Justaxit or AWS Lambda: