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Cloud · head to head

Azure Functions vs IBM Cloud

Azure Functions logo

Azure Functions

Cloud

Event-driven serverless compute on Azure

From
Free
Rated
-
Full reviewWebsite
IBM Cloud logo

IBM Cloud

Cloud

Enterprise cloud solutions from a trusted partner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Azure Functions consumption plan free grant is capped at 1 million executions and 400,000 GB-seconds of resource consumption per month per subscription, billed per GB-second beyond that; IBM Cloud the USD 200 starter cloud credit is valid for 30 days only
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Azure Functions and IBM Cloud actually diverge.

Attributes where Azure Functions and IBM Cloud differ
AttributeAzure FunctionsIBM Cloud
PlatformsWebLinux, Windows, Api, Cli
FoundedUnknown2013

Identical on both: starting price (Free), pricing model (usage-based), free tier (Yes), user rating (Not yet rated), category (Cloud).

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 Azure Functions

Nothing recorded that IBM Cloud does not also cover.

Only in IBM Cloud

  • Virtual Servers
  • Bare Metal
  • Cloud Foundry
  • Kubernetes
  • Watson AI
  • Blockchain
  • Databases
  • API Gateway

What people use each for

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

Azure Functions

  • Event-driven computingnot IBM Cloud
  • Serverless application backendnot IBM Cloud
  • Scalable API endpointsnot IBM Cloud

IBM Cloud

  • Running containerized and VM workloads on IBM's public cloudnot Azure Functions
  • Building on Watson APIs and IBM middleware as managed servicesnot Azure Functions

Where each one falls short

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

Azure Functions

  • Consumption plan free grant is capped at 1 million executions and 400,000 GB-seconds of resource consumption per month per subscription, billed per GB-second beyond that
  • The newer Flex Consumption plan's free grant is smaller still, at 250,000 executions and 100,000 GB-seconds per month
  • Premium plan avoids per-execution charges but bills continuously for allocated core seconds and memory regardless of invocation volume
  • Memory is rounded up to the nearest 128 MB and execution time to the nearest 1 ms for billing, so small overages round upward

IBM Cloud

  • The USD 200 starter cloud credit is valid for 30 days only
  • The larger promotional credits are time boxed: USD 1,000 for Bare Metal Servers for VPC over 120 days, USD 2,500 for Power Virtual Server over 90 days, and USD 5,000 for Backup and Recovery over 90 days
  • The USD 5,000 Backup and Recovery promotion is valid for new clients only and requires a checkout promo code
  • The listed promotions carry an expiry date of 31 December 2026
  • Beyond the free tier the account is pay as you go, so cost tracks usage with no published cap

Pricing, plan by plan

Azure Functions

Free
  • Consumption Plan$null/month
    • 1 million requests free monthly
    • 400,000 GB-seconds free monthly
    • Billed per second and executions
  • Flex Consumption Plan$null/month
    • 250,000 executions free monthly
    • 100,000 GB-seconds free monthly
    • Event-driven scaling
  • Premium Plan$null/month
    • No execution charges
    • At least one instance required
    • Includes automatic scaling and VNET access

IBM Cloud

Free
  • Lite PlanFree
    • Free services
    • Limited resources
    • 30-day trial
  • Standard PlanFree
    • Pay-as-you-go
    • Enterprise support
    • Advanced services

Which should you pick?

Choose Azure Functions if

  • You want to start without paying.
Azure Functions review

Choose IBM Cloud if

  • You need virtual servers.
  • You want to start without paying.
  • You work on Linux, Windows, Api, Cli.
  • You also want bare metal.
IBM Cloud review

Questions people ask

Is Azure Functions or IBM Cloud better?
Neither clearly leads. Azure Functions starts at Free and IBM Cloud at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Azure Functions or IBM Cloud?
Azure Functions starts at Free and IBM Cloud at Free.
Does Azure Functions or IBM Cloud run on more platforms?
Azure Functions runs on Web. IBM Cloud runs on Linux, Windows, Api, Cli.
Can I use Azure Functions for free?
Both have a free tier, so you can try either at no cost before committing.
What is Azure Functions best used for?
Azure Functions is most often used for event-driven computing, serverless application backend, scalable api endpoints. Of those, event-driven computing and serverless application backend are not what IBM Cloud is typically brought in for.
What can Azure Functions do that IBM Cloud cannot?
IBM Cloud covers Virtual Servers, Bare Metal, Cloud Foundry, Kubernetes.

Answered from the vendors’ own pages

Azure Functions: Does Azure Functions have a free tier?

Yes, Azure Functions includes a monthly free grant of 1 million requests and 400,000 GB-seconds on the Consumption Plan, or 250,000 executions and 100,000 GB-seconds on Flex Consumption.

Source
Azure Functions: What is Azure Functions' pricing model?

Azure Functions uses usage-based pricing. Consumption plans charge per second of resource consumption and per execution, measured in gigabyte-seconds and rounded to the nearest 128 MB.

Source
Azure Functions: What is the minimum execution time for Azure Functions?

The minimum execution time is 100 milliseconds on Consumption plans. Premium plans charge based on core seconds and allocated memory.

Source
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