# Quotas for AWS RTB Fabric
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Your AWS account has default quotas, formerly referred to as limits, for each AWS service. Unless otherwise noted, each quota is Region-specific. You can request increases for RTB Fabric quotas.

To view the quotas for RTB Fabric, open the [Service Quotas console](https://console.aws.amazon.com/servicequotas/home). In the navigation pane, choose **AWS services** and select **RTB Fabric**.

To request a quota increase, see [Requesting a Quota Increase](https://docs.aws.amazon.com/servicequotas/latest/userguide/request-quota-increase.html) in the *Service Quotas User Guide*. If the quota is not yet available in Service Quotas, use the [limit increase form](https://console.aws.amazon.com/support/home#/case/create?issueType=service-limit-increase).

Your AWS account has the following quotas related to RTB Fabric.

## Resource quotas
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The following quotas apply to RTB Fabric resources in your account.


| Resource | Default quota | Adjustable | Description | 
| --- | --- | --- | --- | 
| Number of Gateways | 2 | Yes | The maximum number of requester and responder gateways combined that you can create in your account. | 
| Links per Gateway | 2 | Yes | The maximum number of links that can be created from a single gateway. | 
| Modules per Flow | 2 | Yes | The maximum number of modules that can be configured in a single flow. | 
| Availability Zones per Gateway | 1 | Yes | The maximum number of Availability Zones that can be configured per gateway. | 
| External outbound links supported | No | Yes | Indicates whether gateways can be configured with outbound external links. Supported values: 0 or 1. | 
| External inbound links supported | No | Yes | Indicates whether gateways can be configured with inbound external links. Supported values: 0 or 1. | 

## Throughput quotas
<a name="rtb-fabric-throughput-quotas"></a>

The following quotas apply to RTB Fabric throughput and performance.


| Resource | Default quota | Adjustable | Description | 
| --- | --- | --- | --- | 
| Transactions per second (TPS) per link | 1,000 | Yes | The maximum number of transactions per second that can be processed through a single link. | 
| Transactions per second (TPS) per inbound or outbound external link | 1,000 | Yes | The maximum number of transactions per second that can be processed through an inbound or outbound external link. | 
| HTTP request timeout | 1.5 seconds | Yes | The maximum time RTB Fabric waits for a response from RTB applications before timing out the request. Contact your AWS account manager to request increases. | 

## API request quotas
<a name="rtb-fabric-api-quotas"></a>

The following quotas apply to RTB Fabric API requests. These quotas are not adjustable.


| Resource | Default quota | Description | 
| --- | --- | --- | 
| API requests per second per account per Region | 10 | The maximum number of API requests per second for control plane operations in each supported Region in your account. | 

## Quota increase considerations
<a name="quota-increase-considerations"></a>

When requesting quota increases for RTB Fabric, consider the following:
+ **Account verification** – Quota increases may require account verification to ensure legitimate use for real-time bidding applications.
+ **Regional capacity** – Quota increases are subject to available capacity in the requested Region.
+ **Performance impact** – Higher quotas may affect latency and performance characteristics. Test thoroughly after quota increases.
+ **Cost implications** – Higher quotas may result in increased costs. Review pricing before requesting increases.

For strategic partnerships or enterprise-level requirements, contact your AWS account team for assistance with quota planning and optimization.