Connectivity models
Definition
The connectivity model refers to the communication pattern between on-premises network(s) and the cloud resources in AWS. You can deploy cloud resources within an Amazon VPC within a single AWS Region or multiple VPCs across multiple Regions, as well as AWS services which have a public endpoint in a single or multiple AWS Regions, such as Amazon S3 and DynamoDB.
Key questions
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Is there a requirement for inter-VPC communication within a Region and across Regions?
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Is there any requirement to access AWS public endpoints directly from on-premises?
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Is there a requirement to access AWS services using VPC endpoints from on-premises?
Capabilities to consider
The following are some of the most common connectivity model scenarios. Each connectivity model covers requirements, attributes, and considerations.
Note: as highlighted earlier, this whitepaper is focused on the hybrid connectivity between on-premises networks and AWS. For further details on the design to interconnect VPCs, refer to the Building a Scalable and Secure Multi-VPC AWS Network Infrastructure whitepaper.
Models
- AWS Accelerated Site-to-Site VPN – AWS Transit Gateway, Single AWS Region
- AWS DX – DXGW with VGW, Single Region
- AWS DX – DXGW with VGW, Multi-Regions, and AWS Public Peering
- AWS DX – DXGW with AWS Transit Gateway, Multi-Regions, and AWS Public Peering
- AWS DX – DXGW with AWS Transit Gateway, Multi-Regions (more than 3)
