
AWS Certified Advanced Networking – Specialty (ANS-C01) Certification Guide
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A TGW instance is a managed AWS resource, which means you as the consumer are not responsible for things such as creating an EC2 virtual machine instance, configuring it, ensuring it is deployed in a fault-tolerant and highly available way, or managing its software lifecycle. This allows you to simply use it as a tool and leave all the details to AWS, but it also means a loss of granular control and being siloed into specific deployment models. There is always a trade-off.
The following sections will break TGW down into its components to explain how to consume it. TGW itself has already been explained, so the focus will be on what parts of TGW can be configured.
For traditional network engineers, it may be helpful to think of a TGW attachment as a network cable being plugged into the TGW. The attachment serves as a target network object for the purposes of routing packets through the TGW. In conjunction with TGW route tables, complex...