Is there an error on the pricing details for step function when they explain the "Example 2" section ?

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Hi,

I'm trying to understand the pricing details of "Example 2" section that we can found here : https://aws.amazon.com/step-functions/pricing/

In the "Example 2" section, they say :

If you executed this application workflow 100,000 times during one month, the happy path succeeds every time, and there are no retries due to errors, you would pay: State transitions per execution * executions of workflow = total state transitions

9 * 100,000 = 900,000

Enter image description here

But I'm not agree with 9 state transitions per execution because "NotSupportedImageType" state is not executed, so it should be 8 not 9 ? Or even we don't execute a state transitions, we are charged for ?

Thanks in advance for your help !

1 Answer
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Accepted Answer

As you can see in Example 1, you pay for the Start and End states as well. In this case, you also pay for the Parallel state itself, in addition to the two branches. So to count them:

  1. Start
  2. Extract Metadata
  3. Type check
  4. Transform Metadata
  5. Parallel
  6. Rekognition
  7. Thumbnail
  8. Store image
  9. End
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answered a year ago

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