# AWS IoT TwinMaker endpoints and quotas
<a name="iot-twinmaker"></a>

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
<a name="iot-twinmaker_region"></a>

To connect programmatically to AWS IoT TwinMaker, use an endpoint. If you use an HTTP client, you need to prefix control plane and data plane APIs as follows. However, it is unnecessary to add a prefix to AWS SDK and AWS Command Line Interface commands because they automatically add the necessary prefix.
+ Use the `api` prefix for control plane APIs. For example, `api.iottwinmaker.us-west-1.amazonaws.com`.
+ Use the `data` prefix for data plane APIs. For example, `data.iottwinmaker.us-west-1.amazonaws.com`.

For more information, see [Endpoints and quotas](https://docs.aws.amazon.com/iot-twinmaker/latest/guide/endpionts-and-quotas.html) in the AWS IoT TwinMaker User Guide.

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/general/latest/gr/iot-twinmaker.html)

## Service quotas
<a name="limits_iot_twinmaker"></a>

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/general/latest/gr/iot-twinmaker.html)

## AWS IoT TwinMaker API throttling limits
<a name="limits_iot_twinmaker_throttling_lim"></a>

This topic describes the maximum number of transactions per second (TPS) that can be made to AWS IoT TwinMaker API actions per AWS account.
+ **Request rate for Model and Scene API operations limit:** 10 TPS per AWS account.
+ **Request rate for Data read and write API operations limit:** 100 TPS per AWS account.

**Note**  
The TPS limits apply to all regions, and are not adjustable.