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Azure Functions: Limitations

For a project I’m working on we are investigating the usage of Azure Functions to replace the existing PaaS components we are using. But what are the limitations?

A customer explained me that they tried to move to FaaS before using AWS Lambda but where unhappy with the constrains and limits that AWS Lambda has.

Let’s compare the two:

  AWS Lambda Azure Functions
Request Payload Size 6MB No limit
Max duration 300 seconds No limit
Deployment Package Size 50MB No limit
Size of code/dependencies 250MB No Limit
Concurrent executions 100 Only limited to the # of instances

Should I say more? Smile

Some useful links:

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