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When working with cloud service providers, you may notice that at some point there are service / quota limitations.

Some limits are per account / subscription; some of them are per region and some limits are per pricing tier (free tier vs billable).

Here are some of the most common reasons for service / quota limitations:

• Performance issues on the cloud provider’s side – loading a lot of virtual machines on the same data center requires a lot of resources from the cloud provider
• Avoiding spikes in usage – protect from a situation where one customer consumes a lot of resources that might affect other customers and might eventually cause denial of service

For more information about default cloud service limits, see:

• AWS Service Limits:
  https://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html
• Azure subscription and service limits, quotas, and constraints:
  https://docs.microsoft.com/en-us/azure/azure-subscription-service-limits
• Google App Engine Quotas:
  https://cloud.google.com/appengine/quotas
• Oracle Cloud Service Limits:
  https://docs.us-phoenix-1.oraclecloud.com/Content/General/Concepts/servicelimits.htm

Default limitations can be changed by contacting the cloud service provider’s support and requesting a change to the default limitation.

For instructions on how to change the service limitations, see:

• How do I manage my AWS service limits?
  https://aws.amazon.com/premiumsupport/knowledge-center/manage-service-limits/
• Understanding Azure Limits and Increases
  https://azure.microsoft.com/en-us/blog/azure-limits-quotas-increase-requests/
• Google Resource Quotas
  https://cloud.google.com/compute/quotas#request_quotas
• Oracle Cloud – Requesting a Service Limit Increase
  https://docs.us-phoenix-1.oraclecloud.com/Content/General/Concepts/servicelimits.htm#three