Diagram

NOTE: In modern cloud native world, we can assume any hardware service that is provisioned through network as resources.

• When we learn cloud, we need to make sure we start by learning cloud default service such as VPC, IAM, etc.

Let’s look at vpc analysis

Let’s look at us-northeast-1 default vpc and we can see 172.31.0.0/16 subnet.

Again let’s look at ap-southeast-1 default vpc and we can see 172.31.0.0/16 subnet.

But based on the following architecture, even though they use the same subnet, we can say they are in different network since they have a different VPC ID.

Why we draw what we draw …

1. Lets’ imagine this way

• We have payment gateway microservice owned by hellocloud-master.
• And we also have checkout microservice owned by hellocloud-dev.
• We can vividly see the each of these microservice are deployed in separate VPC.
• Then, we realize that in order for microservices to talk to each other, of course we need to have a connection between them or connect each other.

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