title: How to get AWS VCPU's utilization number via API
body: <p>I would like to get the number of AWS VCPU's used by all running instances in the region via GO API, so I can run some preflight checks before I create new instances, to see if there are enough VCPU's available, without increasing the quota.</p>
  <p>In other words, if we look at the console we can see that <strong>Running On-Demand Standard (A, C, D, H, I, M, R, T, Z) instances</strong> service quota, shows <strong>Applied quota value</strong> column that indicates the current VCPU's limit. If you click on this field, you can see the 'Utilization' field that shows the used VCPU's. This is what I need.</p>
  <p><img src="https://i.stack.imgur.com/JqQo7.png" alt="AWS Service Quotas - Running On-Demand Standard instances" /></p>
  <p>Thanks!</p>