title: Exponential Wait time in AWS Step Function
body: <p>Currently, a wait state in AWS can wait only for a defined set period of time.</p>
  <p>let's say my step function checks with API for status if the status is updated it will move ahead or else it will wait again for a set period of time!</p>
  <p>I would like to make this waiting period dynamic</p>
  <p>i.e. (the backoff rate is set to 2)</p>
  <p>1st retry: wait for 3600s</p>
  <p>2nd retry: wait for 7200s (3600x2)</p>
  <p>3rd retry: wait for 14400s (7200x2)</p>
  <p>and so on.</p>
  <p>Is there any way I can do this without using any other external computation resource (such as lambda)</p>