Letโs discuss about VPC today, we all must have heard of Transit gateway, Direct Connect and Site-to-Site VPN, all of these seem to sound similar, but whatโs the difference between them?
A ๐ง๐ฟ๐ฎ๐ป๐๐ถ๐ ๐๐ฎ๐๐ฒ๐๐ฎ๐ is a central hub by which you can connect VPCs and on-premises networks within the AWS environment.
๐๐ถ๐ฟ๐ฒ๐ฐ๐ ๐๐ผ๐ป๐ป๐ฒ๐ฐ๐ does this by creating a direct, dedicated private connection with your on-premises network and AWS.
Creating a ๐ฆ๐ถ๐๐ฒ-๐๐ผ-๐ฆ๐ถ๐๐ฒ ๐ฉ๐ฃ๐ก creates an encrypted over-the-public-internet โtunnelโ to associate your on-premises network with a single AWS VPC.
So, in fact, a Transit Gateway provides for managing multiple VPCs and on-premises networks connections, with Direct Connect offering a direct, high-bandwidth connection, and a Site-to-Site VPN is a fundamental connection using the public Internet for a single VPC link.
๐๐ฒ๐ ๐ฑ๐ถ๐ณ๐ณ๐ฒ๐ฟ๐ฒ๐ป๐ฐ๐ฒ๐:
๐๐๐ป๐ฐ๐๐ถ๐ผ๐ป๐ฎ๐น๐ถ๐๐:
๐ง๐ฟ๐ฎ๐ป๐๐ถ๐ ๐๐ฎ๐๐ฒ๐๐ฎ๐ : It is central to make the different VPCs and on-premises network connect to each other; it simplifies network management.
๐๐ถ๐ฟ๐ฒ๐ฐ๐ ๐๐ผ๐ป๐ป๐ฒ๐ฐ๐ : Dedicated and private connection that connects your on-premises network to AWS with high bandwidth with minimal latency.
๐ฆ๐ถ๐๐ฒ-๐๐ผ-๐ฆ๐ถ๐๐ฒ ๐ฉ๐ฃ๐ก : An encrypted tunnel across the public internet which interconnects your on-premises network to an AWS VPC.
๐ฆ๐ฐ๐ฎ๐น๐ฎ๐ฏ๐ถ๐น๐ถ๐๐
๐ง๐ฟ๐ฎ๐ป๐๐ถ๐ ๐๐ฎ๐๐ฒ๐๐ฎ๐: It is highly scalable, thus allowing easy addition of new VPCs or on-premises network connections.
๐๐ถ๐ฟ๐ฒ๐ฐ๐ ๐๐ผ๐ป๐ป๐ฒ๐ฐ๐: Highly scalable depending on the chosen bandwidth tier.
๐ฆ๐ถ๐๐ฒ-๐๐ผ-๐ฆ๐ถ๐๐ฒ ๐ฉ๐ฃ๐ก: Not as scalable as Direct Connect because it is restrained by public internet bandwidth.
๐ฆ๐ฒ๐ฐ๐๐ฟ๐ถ๐๐:
๐ง๐ฟ๐ฎ๐ป๐๐ถ๐ ๐๐ฎ๐๐ฒ๐๐ฎ๐: It is secure in the AWS infrastructure, but on the on-premises connection, there would rely on extra security measures.
๐๐ถ๐ฟ๐ฒ๐ฐ๐ ๐๐ผ๐ป๐ป๐ฒ๐ฐ๐: Very secure since it is based on a dedicated private connection.
๐ฆ๐ถ๐๐ฒ-๐๐ผ-๐ฆ๐ถ๐๐ฒ ๐ฉ๐ฃ๐ก: Relies on encryption to protect traffic across the internet.
๐ช๐ต๐ฒ๐ป ๐๐ผ ๐๐๐ฒ ๐ฒ๐ฎ๐ฐ๐ต:
๐ง๐ฟ๐ฎ๐ป๐๐ถ๐ ๐๐ฎ๐๐ฒ๐๐ฎ๐:
You want to connect multiple VPCs and on-premises networks with complex routing requirements.
๐๐ถ๐ฟ๐ฒ๐ฐ๐ ๐๐ผ๐ป๐ป๐ฒ๐ฐ๐:
You want a high-bandwidth, dedicated private connection to AWS for large data transfers.
๐ฆ๐ถ๐๐ฒ-๐๐ผ-๐ฆ๐ถ๐๐ฒ ๐ฉ๐ฃ๐ก:
You want a simple way to connect a single on-premises network to an AWS VPC with smaller data volumes.