# Migration Hub Orchestrator endpoints and quotas
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To connect programmatically to an AWS service, you use an endpoint. AWS services offer the following endpoint types in some or all of the AWS Regions that the service supports: IPv4 endpoints, dual-stack endpoints, and FIPS endpoints. Some services provide global endpoints. For more information, see [AWS service endpoints](rande.md).

Service quotas, also referred to as limits, are the maximum number of service resources or operations for your AWS account. For more information, see [AWS service quotas](aws_service_limits.md).

The following are the service endpoints and service quotas for this service.

## Service endpoints
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[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/general/latest/gr/migrationhuborchestrator.html)

## Service quotas
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| Name | Default | Adjustable | Description | 
| --- | --- | --- | --- | 
| Maximum steps | 15 | No | The maximum number of steps in a step group. | 
| Maximum step groups | 15 | No | The maximum number of step groups in a migration workflow. | 
| Maximum migration workflows | 50 | No | The maximum number of migration workflows in progress. |