1
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‫Okay, so now we see

2
00:00:01,740 --> 00:00:03,720
‫how we can connect our VPC together

3
00:00:03,720 --> 00:00:05,220
‫through peering connections.

4
00:00:05,220 --> 00:00:08,120
‫And we also saw about the site to site VPN

5
00:00:08,120 --> 00:00:09,250
‫and Direct Connect.

6
00:00:09,250 --> 00:00:10,440
‫And as you can see now,

7
00:00:10,440 --> 00:00:13,800
‫if we have a serious infrastructure on AWS,

8
00:00:13,800 --> 00:00:16,800
‫the network topology can become quite complicated.

9
00:00:16,800 --> 00:00:19,770
‫So to solve this mess, there has been a new service created,

10
00:00:19,770 --> 00:00:21,550
‫which is called the Transit Gateway.

11
00:00:21,550 --> 00:00:24,010
‫So the Transit Gateway is to have a peering connection

12
00:00:24,010 --> 00:00:27,410
‫between thousands of VPC and your on-premises system

13
00:00:27,410 --> 00:00:29,970
‫with a hub-and-spoke star connection.

14
00:00:29,970 --> 00:00:31,320
‫So this looks just like this.

15
00:00:31,320 --> 00:00:34,380
‫You have the VPC Transit Gateway in the middle,

16
00:00:34,380 --> 00:00:37,620
‫and all your Amazon VPC, your Direct Connect gateway,

17
00:00:37,620 --> 00:00:38,980
‫as well as your VPN connections

18
00:00:38,980 --> 00:00:41,270
‫are connected through the Transit Gateway.

19
00:00:41,270 --> 00:00:44,250
‫So you don't need to peer the VPC with one another,

20
00:00:44,250 --> 00:00:47,370
‫you don't need to have different connections and routes

21
00:00:47,370 --> 00:00:49,170
‫between each of them and Direct Connect

22
00:00:49,170 --> 00:00:51,650
‫and side to side VPN, all of this is done

23
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‫within a single gateway,

24
00:00:53,230 --> 00:00:55,120
‫that will provide this functionality.

25
00:00:55,120 --> 00:00:57,170
‫So it works with Amazon VPCs,

26
00:00:57,170 --> 00:00:58,880
‫it works with the VPN connections

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00:00:58,880 --> 00:01:00,760
‫and the Direct Connect gateways.

28
00:01:00,760 --> 00:01:01,593
‫And that's it.

29
00:01:01,593 --> 00:01:04,820
‫So when in the exam, you see a way to connect hundreds

30
00:01:04,820 --> 00:01:06,440
‫or thousands of VPC together,

31
00:01:06,440 --> 00:01:09,430
‫with as well your on-premise infrastructure,

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00:01:09,430 --> 00:01:11,560
‫think no more than the Transit Gateway.

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00:01:11,560 --> 00:01:12,420
‫I hope that was helpful,

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‫and I will see you in the next lecture.