Software · head to head
Go vs Azure Functions
Azure Functions
Software
Event-driven serverless compute on Azure
- From
- On request
- Rated
- -
The short version
- Only Go has a free tier, so it costs nothing to try first.
- Each has a real cost: Go no built-in generic types until recent versions, requiring workarounds for type-safe collections; 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
Where they differ
Only the attributes on which Go and Azure Functions actually diverge.
| Attribute | Go | Azure Functions |
|---|---|---|
| Starting price | Free | On request |
| Pricing model | open-source | subscription |
| Free tier | Yes | No |
| Platforms | Windows, Linux, macOS | Web |
| Founded | 2009 | Unknown |
Identical on both: user rating (Not yet rated), category (Unknown).
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 Go
- Goroutines
- Channels
- Garbage collection
- Cross compilation
- Fast compilation
- Simple syntax
- Built-in testing
- Reflection
Only in Azure Functions
Nothing recorded that Go does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Go
- Cloud infrastructure and microservicesnot Azure Functions
- Command-line tools and utilitiesnot Azure Functions
- API servers and backend servicesnot Azure Functions
- DevOps and system automation toolsnot Azure Functions
Azure Functions
No use cases recorded yet. See the Azure Functions review.
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Go
- No built-in generic types until recent versions, requiring workarounds for type-safe collections
- Error handling through explicit return values considered verbose compared to exception-based approaches
- Smaller standard library compared to Python or Java; requires external packages for common tasks
- Package management can create version conflicts and dependency hell issues
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
Pricing, plan by plan
Go
FreeNo published plan breakdown. See the Go review.
Azure Functions
On requestNo published plan breakdown. See the Azure Functions review.
Which should you pick?
Choose Go if
- You need goroutines.
- You want to start without paying.
- You work on Windows, Linux, macOS.
- You also want channels.
Choose Azure Functions if
Nothing in the data separates Azure Functions from Go on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Go or Azure Functions better?
- Neither clearly leads. Go starts at Free and Azure Functions at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Go or Azure Functions?
- Go has a free tier; the other does not. Paid plans start at Free for Go and On request for Azure Functions.
- Does Go or Azure Functions run on more platforms?
- Go runs on Windows, Linux, macOS. Azure Functions runs on Web.
- Can I use Go for free?
- Yes. Go has a free tier, so you can try it without paying. Azure Functions starts at On request.
- What is Go best used for?
- Go is most often used for cloud infrastructure and microservices, command-line tools and utilities, api servers and backend services, devops and system automation tools. Of those, cloud infrastructure and microservices and command-line tools and utilities are not what Azure Functions is typically brought in for.
- What can Go do that Azure Functions cannot?
- Go covers Goroutines, Channels, Garbage collection, Cross compilation.