Direct Connect dedicated connections with four Transit VIFs

Question

Dear Team - Going through the below latest DXGW blog.

https://aws.amazon.com/blogs/networking-and-content-delivery/hybrid-cloud-architectures-using-aws-direct-connect-gateway/

As per the figure-5 and Scenario-2, **is it correct understanding that, recommendation is to use multiple DXGW when you use multiple TVIF on single dedicated connection ? ** i dont see any ref content about figure-5 in this blog so wondering and asking this question.  WHats the use case of showing multiple  DXGW in this Blog and what we can not do with single DXGW in this use case of figure 5?
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"Scenario 2: Increase usage of existing Direct Connect dedicated connections with four Transit VIFs"
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Thanks

Accepted Answer

No, that isn't a requirements to use multiple DXGW when using up to 4 TVIFs. That will be driven by your use-case and scale of your organization.
In Scenario 2, the figure is considering a more complex case with 4 isolated production environments. Addressing the complexity of extending network segmentation for security isolation or customized routing decisions at scale where some organizations had to have multiple DX Connections + Multiple DXGW before that new limit became available. Thus having 4 DXGW in that use-case can help managing advertised routes and filtering.
The 2nd DX there is for High Resiliency. An environment of this scale is highly recommended to follow Maximum resiliency with dual DX Connections.

Direct Connect dedicated connections with four Transit VIFs

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