Are EC2 instances charged when starting/stopping?

I am trying to host an application on AWS. I am comparing hosting it on Lambda and on EC2, and was thinking about "sides costs".
Indeed with lambda I am charged for cold starts, and I was wondering if when starting/stopping an EC2 instance you're charged for this time, since my instance will take something between 1 or 2 minutes to start and stop.
Since I plan to start and shut down quite a lot of instances frequently it would represent a non negligible cost for me if I am charged for this period.

1 answer

  • answered 2022-05-04 10:19 Marcin

    You pay when the instance is in RUNNING state. From docs:

    If your instance is billed by the second, then you're billed for a minimum of 60 seconds each time a new instance is started—that is, when the instance enters the running state.

    This is independent of your application on the instance.

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