<p>Creates a transit gateway.</p> <p>You can use a transit gateway to interconnect your virtual private clouds (VPC) and on-premises networks. After the transit gateway enters the <code>available</code> state, you can attach your VPCs and VPN connections to the transit gateway.</p> <p>To attach your VPCs, use <a>CreateTransitGatewayVpcAttachment</a>.</p> <p>To attach a VPN connection, use <a>CreateCustomerGateway</a> to create a customer gateway and specify the ID of the customer gateway and the ID of the transit gateway in a call to <a>CreateVpnConnection</a>.</p> <p>When you create a transit gateway, we create a default transit gateway route table and use it as the default association route table and the default propagation route table. You can use <a>CreateTransitGatewayRouteTable</a> to create additional transit gateway route tables. If you disable automatic route propagation, we do not create a default transit gateway route table. You can use <a>EnableTransitGatewayRouteTablePropagation</a> to propagate routes from a resource attachment to a transit gateway route table. If you disable automatic associations, you can use <a>AssociateTransitGatewayRouteTable</a> to associate a resource attachment with a transit gateway route table.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

<p>Creates a transit gateway.</p> <p>You can use a transit gateway to interconnect your virtual private clouds (VPC) and on-premises networks. After the transit gateway enters the <code>available</code> state, you can attach your VPCs and VPN connections to the transit gateway.</p> <p>To attach your VPCs, use <a>CreateTransitGatewayVpcAttachment</a>.</p> <p>To attach a VPN connection, use <a>CreateCustomerGateway</a> to create a customer gateway and specify the ID of the customer gateway and the ID of the transit gateway in a call to <a>CreateVpnConnection</a>.</p> <p>When you create a transit gateway, we create a default transit gateway route table and use it as the default association route table and the default propagation route table. You can use <a>CreateTransitGatewayRouteTable</a> to create additional transit gateway route tables. If you disable automatic route propagation, we do not create a default transit gateway route table. You can use <a>EnableTransitGatewayRouteTablePropagation</a> to propagate routes from a resource attachment to a transit gateway route table. If you disable automatic associations, you can use <a>AssociateTransitGatewayRouteTable</a> to associate a resource attachment with a transit gateway route table.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}