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APIs · head to head

Microsoft Azure API Management vs Basis Theory

Microsoft Azure API Management logo

Microsoft Azure API Management

APIs

Hybrid, multi-cloud API management service on Azure

From
Free
Rated
-
Full reviewWebsite
Basis Theory logo

Basis Theory

APIs

Developer tokenisation platform that holds card and sensitive data inside a PCI Level 1 environment you do not operate

From
$995/month
Rated
-
Full reviewWebsite

The short version

  • Only Microsoft Azure API Management has a free tier, so it costs nothing to try first.
  • Each has a real cost: Microsoft Azure API Management prices are not shown on the pricing page itself; every tier renders as a placeholder and routes to the calculator or sales; Basis Theory the Starter plan is 995 US dollars a month before any volume, which is a real floor for an early stage company and puts the product out of reach of teams tokenising a few thousand records.
  • They diverge on capability: Microsoft Azure API Management covers API Gateway, Basis Theory covers Tokenisation API.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Microsoft Azure API Management and Basis Theory actually diverge.

Attributes where Microsoft Azure API Management and Basis Theory differ
AttributeMicrosoft Azure API ManagementBasis Theory
Starting priceFree$995/month
Pricing modelsubscriptionPer month by token volume
Free tierYesNo
PlatformsCloud, Hybrid, Multi-cloudWeb, iOS, Android, Linux
Founded1975Unknown

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

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 Microsoft Azure API Management

  • API Gateway
  • Developer Portal
  • API Policies
  • Azure services
  • AWS
  • Google Cloud
  • On-premises
  • Cloud support

Only in Basis Theory

  • Tokenisation API
  • Hosted elements
  • Outbound proxy
  • PCI attestation of compliance
  • Processor portability
  • Reactors
  • Access controls and audit
  • PII and PHI options

What people use each for

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

Microsoft Azure API Management

  • API gateway and lifecycle management on Azurenot Basis Theory
  • Throttling, keys and policies in front of backend servicesnot Basis Theory
  • Developer portal for internal and partner APIsnot Basis Theory
  • Hybrid deployments using self-hosted gatewaysnot Basis Theory

Basis Theory

  • A payments company that wants card on file without bringing its own infrastructure into PCI scope and paying for the assessment that followsnot Microsoft Azure API Management
  • A merchant locked into a processor by that processor vault that wants to hold its own tokens and route to more than one acquirernot Microsoft Azure API Management
  • A fintech collecting bank account and identity data that needs it isolated from its application database before an enterprise security reviewnot Microsoft Azure API Management
  • A team that needs to send stored card data to a third party for a one-off integration without that data traversing its own serversnot Microsoft Azure API Management

Where each one falls short

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

Microsoft Azure API Management

  • Prices are not shown on the pricing page itself; every tier renders as a placeholder and routes to the calculator or sales
  • Two parallel generations of tiers, classic and v2, so the choice is which lineage before which size
  • The Developer tier is explicitly not for production
  • Self-hosted gateways and workspace gateways are charged separately from the service

Basis Theory

  • The Starter plan is 995 US dollars a month before any volume, which is a real floor for an early stage company and puts the product out of reach of teams tokenising a few thousand records.
  • Starter is limited to the US region, so a company with European data residency requirements is pushed into a quoted Scale or Enterprise agreement immediately.
  • Log retention on Starter is 24 hours, which is well below what most security teams expect for a system holding cardholder data and forces an upgrade for reasons unrelated to volume.
  • Migrating away means moving card data out of the vault, which requires processor and assessor involvement and is slow, so the portability argument that attracts buyers cuts against them at exit.
  • An attestation of compliance covers the vendor environment, not your assessment; your assessor still decides what is in scope, and buyers occasionally discover their integration pattern pulled systems back into scope anyway.

Pricing, plan by plan

Microsoft Azure API Management

Free
  • ConsumptionFree
    • 0-1 million API operations free monthly per subscription
  • Basic v2$undefined/mo
    • 10 million API requests included monthly
  • Standard v2$undefined/mo
    • 50 million API requests included monthly
  • Premium v2$undefined/mo
    • Unlimited included API requests

Basis Theory

$995/month
  • Starter$995/month
    • 20,000 tokens included
    • Production PCI Level 1 environment
    • US region only
  • Scale$undefined/month
    • Quoted
    • Higher token volumes
    • Additional regions
  • Enterprise$undefined/month
    • Quoted
    • Additional compliance options for PII and PHI
    • Responses for 95 percent of PCI SAQ D

Which should you pick?

Choose Microsoft Azure API Management if

  • You need api gateway.
  • You want to start without paying.
  • You work on Cloud, Hybrid, Multi-cloud.
  • You also want developer portal.
Microsoft Azure API Management review

Choose Basis Theory if

  • You need tokenisation api.
  • You work on Web, iOS, Android, Linux.
  • You also want hosted elements.
Basis Theory review

Questions people ask

Is Microsoft Azure API Management or Basis Theory better?
Neither clearly leads. Microsoft Azure API Management starts at Free and Basis Theory at $995/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Microsoft Azure API Management or Basis Theory?
Microsoft Azure API Management has a free tier; the other does not. Paid plans start at Free for Microsoft Azure API Management and $995/month for Basis Theory.
Does Microsoft Azure API Management or Basis Theory run on more platforms?
Microsoft Azure API Management runs on Cloud, Hybrid, Multi-cloud. Basis Theory runs on Web, iOS, Android, Linux.
Can I use Microsoft Azure API Management for free?
Yes. Microsoft Azure API Management has a free tier, so you can try it without paying. Basis Theory starts at $995/month.
What is Microsoft Azure API Management best used for?
Microsoft Azure API Management is most often used for api gateway and lifecycle management on azure, throttling, keys and policies in front of backend services, developer portal for internal and partner apis, hybrid deployments using self-hosted gateways. Of those, api gateway and lifecycle management on azure and throttling, keys and policies in front of backend services are not what Basis Theory is typically brought in for.
What can Microsoft Azure API Management do that Basis Theory cannot?
Microsoft Azure API Management covers API Gateway, Developer Portal, API Policies, Azure services. Basis Theory covers Tokenisation API, Hosted elements, Outbound proxy, PCI attestation of compliance.

Answered from the vendors’ own pages

Microsoft Azure API Management: Is Azure API Management free?

Azure API Management offers a Consumption tier with a free tier that includes 0-1 million API operations per subscription monthly at no cost, then charges per operation beyond that. Classic Consumption tier is pay-as-you-go billing.

Source
Basis Theory: Does this make us PCI compliant?

It removes cardholder data from your systems and gives you an AOC plus documented responses for most of a SAQ D. Your assessor still determines your scope, and a careless integration can pull systems back in.

Microsoft Azure API Management: What are the API request limits for Azure API Management's v2 tiers?

Basic v2 includes 10 million API requests monthly, Standard v2 includes 50 million monthly, and Premium v2 includes unlimited API requests. Additional requests beyond included amounts incur standard rates.

Source
Basis Theory: What does it cost to start?

995 US dollars a month on Starter, including 20,000 tokens, a production PCI Level 1 environment and US hosting. Higher tiers are quoted.

Microsoft Azure API Management: What cache capacity does each Azure API Management tier provide?

Basic v2 provides 250 MB built-in cache, Standard v2 provides 1 GB cache, and Premium v2 provides 5 GB cache capacity for response caching.

Source
Basis Theory: Can we switch payment processors without re-collecting cards?

Yes, that is the main non-compliance reason to buy it. You hold the tokens and detokenise into whichever processor you route to.

Basis Theory: Is data stored outside the United States?

Not on Starter, which is US only. Other regions require a Scale or Enterprise agreement.

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