3 types:-
<ol>
<li>same region (same account)
</li>
<li>different region (same account)
</li>
<li>different account (different accounts)
</li>
</ol>
<ol>
<li>same region (same account) :- one ec2 is in default vpc and another ec2 in manual vpc. Both instance in public subnet.</li>
</ol>
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140606946/3d764e7b-c2f7-45f1-bfa4-f53b5ff6dbed.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140645787/6b7212fe-21b3-4708-aef0-d2b8f944fc24.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140731757/43575d27-710f-4a84-9b66-a7767c317454.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140714541/eaae97dd-1588-4a1d-bd1a-4feef2243e98.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140725496/25c12106-9e83-436d-a949-6e1679e7afd7.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140736848/52d0f0f6-c9a1-43ae-aad8-9bc425b661ad.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140741998/a88f64af-f704-49f3-ac0a-84fb09f3eb22.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140748168/2f5fec30-714b-4496-94f9-61b97e354058.png" alt class="image--center mx-auto" />
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1710140755555/e49cf355-59b9-40e8-8c7c-dc8c91b1e723.png" alt class="image--center mx-auto" />

3 types:-

1. same region (same account)
    
2. different region (same account)
    
3. different account (different accounts)
    

1. same region (same account) :- one ec2 is in default vpc and another ec2 in manual vpc. Both instance in public subnet.
    

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140606946/3d764e7b-c2f7-45f1-bfa4-f53b5ff6dbed.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140645787/6b7212fe-21b3-4708-aef0-d2b8f944fc24.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140731757/43575d27-710f-4a84-9b66-a7767c317454.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140714541/eaae97dd-1588-4a1d-bd1a-4feef2243e98.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140725496/25c12106-9e83-436d-a949-6e1679e7afd7.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140736848/52d0f0f6-c9a1-43ae-aad8-9bc425b661ad.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140741998/a88f64af-f704-49f3-ac0a-84fb09f3eb22.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140748168/2f5fec30-714b-4496-94f9-61b97e354058.png align="center")

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1710140755555/e49cf355-59b9-40e8-8c7c-dc8c91b1e723.png align="center")

4.2 VPC Peering