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

VatStack
vatlayer API
Justaxit
Lookuptax
The VAT API
Vatcheckapi.com
InvoiceRapid
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.

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 | aws.amazon.com | taxid.dev |
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What each product offers, as listed by its team.


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Why this product is good
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Overall verdict
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As answered by people managing AWS Lambda and Taxid.dev.
Taxid.dev's answer:
TaxID was built after running into the same problem on three consecutive client projects: validating EU VAT numbers reliably.
The official EU source — VIES — is SOAP-based, frequently goes down without warning, has no caching layer, and returns errors like "MS_UNAVAILABLE" with no context. Every time, the workaround was the same: write a thin wrapper, add Redis cache, handle the downtime, parse the SOAP response into something usable.
Instead of writing it a fourth time, I built TaxID as a public API. The free tier exists because that's what I would have wanted on those projects — a way to evaluate the product without a sales cycle.
The product is intentionally small: one well-built endpoint, structured errors, fast cached responses. No tax calculation, no nexus tracking, no enterprise dashboard. Just the VIES wrapper VIES should have been.
Taxid.dev's answer:
TaxID is the only VAT validation API that combines four things at once:
Other providers either charge from the first call, only cover EU VIES, or return SOAP/XML you need to parse. TaxID is the thin REST wrapper that just works.
Taxid.dev's answer:
Three reasons:
Developer-first DX. REST, JSON, OpenAPI spec, Stripe-style error codes, country-specific format validation before hitting VIES (so malformed numbers fail instantly without consuming quota). Most competitors are SOAP wrappers with cryptic errors.
Real free tier. 100 validations per month, no credit card. Vatstack, Vatlayer and Avalara either require a card upfront or have hard limits that block real evaluation. With TaxID you can ship a side project to production on the free plan.
Extended coverage. Most VAT APIs stop at the EU. TaxID adds the UK (HMRC), Switzerland, Norway and Australia (ABR) — useful for any SaaS with global B2B customers.
Honest about limits: TaxID is not an enterprise compliance suite. If you need US sales tax nexus, full ERP integration or KYB beyond VAT, look at Avalara or Sovos. TaxID is for developers who need to validate a VAT number reliably inside a checkout or invoice flow.
Taxid.dev's answer:
Developers building B2B SaaS or eCommerce products that need to validate company tax IDs as part of their billing flow.
Typical users: - SaaS founders integrating Stripe with EU VAT compliance (reverse charge mechanism) - Backend developers working on B2B checkouts in Node.js, Python, PHP or Go - Indie hackers shipping products to European customers who can't afford enterprise tax compliance tools - Accounting and ERP integration developers - Compliance and KYB workflow builders
The shared trait: they want a clean REST API with a free tier, not an enterprise sales call.
Taxid.dev's answer:
Share your experience with using AWS Lambda and Taxid.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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


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
Tracking Taxid.dev since May 2026.
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