Transit Gateway Route Table Announcement
A Transit Gateway Route Table Announcement represents the advertisement of a transit gateway route table to a peer—for example, to another transit gateway (peering) or to an AWS Network Manager core network. Routes that originate from such an announcement appear in the route table with a TransitGatewayRouteTableAnnouncementId, and Overmind links those ec2-transit-gateway-route items to this type.
Official API documentation: DescribeTransitGatewayRouteTableAnnouncements
Note
Overmind does not currently provide a dedicated adapter for ec2-transit-gateway-route-table-announcement. This type is documented because ec2-transit-gateway-route items can link to it when a route originates from a route table announcement (TransitGatewayRouteTableAnnouncementId).