Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,210 --> 00:00:08,220 So let's talk about the cloud, what it is, and why do we need it now in order to fully understand 2 00:00:08,220 --> 00:00:09,930 the motivation for the cloud? 3 00:00:09,960 --> 00:00:15,630 Let's discuss what was here before the cloud and before the cloud. 4 00:00:15,840 --> 00:00:24,150 If you needed Salvo, you had to first bite, then install it, the operating system and the software 5 00:00:24,150 --> 00:00:24,780 that you needed. 6 00:00:25,380 --> 00:00:28,050 Then you had to maintain it yourself. 7 00:00:28,650 --> 00:00:32,030 Of course, when it became old, you had to replace it. 8 00:00:32,490 --> 00:00:36,810 And in general you had to have your own I.T. team. 9 00:00:37,710 --> 00:00:42,870 And that means that you often ended up with something that looks like this. 10 00:00:43,910 --> 00:00:50,720 And for all of you who really had the great experience of having this in your server room, then you 11 00:00:50,720 --> 00:00:53,450 definitely know this is not a great place to be in. 12 00:00:54,560 --> 00:01:02,730 Now, in addition to servers, the same goes also with networking databases, user management and more. 13 00:01:02,960 --> 00:01:10,630 All this had to be taken care of by yourself or your team, but there is more. 14 00:01:11,270 --> 00:01:17,990 Let's imagine that you had an electric shop, you sold their electric appliances, such as washing machines, 15 00:01:17,990 --> 00:01:19,700 TVs and so on. 16 00:01:20,240 --> 00:01:26,510 Now, naturally, you had a website and at the beginning you decided that this website should be installed 17 00:01:26,510 --> 00:01:27,890 on two servers. 18 00:01:28,440 --> 00:01:30,170 And now let's see what happened. 19 00:01:30,620 --> 00:01:38,430 On January, that website began operating and you saw that the CPU was on 60 percent, which is fine, 20 00:01:38,450 --> 00:01:42,590 60 percent is a well utilized CPU and there is no reason to worry. 21 00:01:43,010 --> 00:01:48,740 And so it went on through all the year until we reached November. 22 00:01:49,340 --> 00:01:51,140 And what happens in November? 23 00:01:51,290 --> 00:01:54,680 Of course, in November, we have Black Friday. 24 00:01:55,040 --> 00:02:04,370 And that means that your shop and your website looks like this huge amount of excited buyers flocking 25 00:02:04,370 --> 00:02:09,470 to the shop and your website and want to take advantage of the great sales you offer. 26 00:02:09,710 --> 00:02:17,700 Now, as a result of this is that the CPU utilization jumped from 60 percent to 120 percent. 27 00:02:18,140 --> 00:02:21,230 Now, of course, that is not really hundred and twenty percent. 28 00:02:21,230 --> 00:02:26,160 SIBIU What really happened is that the website crashed and burned. 29 00:02:26,750 --> 00:02:32,210 So in the most important shopping day in the year, your website simply went down. 30 00:02:32,960 --> 00:02:35,550 So in the old days before the cloud, what did we do? 31 00:02:36,170 --> 00:02:42,140 Well, after this incident, you set up a meeting and you called the item and you thought what should 32 00:02:42,140 --> 00:02:42,530 be done? 33 00:02:42,860 --> 00:02:50,000 And the decisions that was made was to increase the number of servers on the website from two to four. 34 00:02:50,660 --> 00:02:57,500 And then what happens is that on January, we are standing on 20 percent utilization of the CPU, which 35 00:02:57,500 --> 00:02:59,860 is admittedly quite low. 36 00:03:00,320 --> 00:03:05,560 And it goes like this throughout the year, again, until we reach November. 37 00:03:05,870 --> 00:03:07,670 And again, we have Black Friday. 38 00:03:08,000 --> 00:03:12,230 Only this time the CPU utilization stands at 90 percent. 39 00:03:12,800 --> 00:03:14,590 Now, 90 percent is quite good. 40 00:03:14,870 --> 00:03:18,860 We see that the servers are walking, but none of them is crushing. 41 00:03:18,860 --> 00:03:20,600 And the website hold up. 42 00:03:21,470 --> 00:03:24,500 But let's take a look at the following chart. 43 00:03:24,680 --> 00:03:30,800 What we see here is the CPU utilization over time and the chart goes like this. 44 00:03:31,490 --> 00:03:36,020 So we see that most of the year the utilization is extremely low. 45 00:03:36,290 --> 00:03:41,510 Only on a single month in the year or November, we have a high utilization. 46 00:03:42,140 --> 00:03:50,270 But what we actually bought was this, the photo that we both are walking three hundred sixty five days 47 00:03:50,270 --> 00:03:50,750 a year. 48 00:03:51,170 --> 00:03:54,880 That means that all this is wasted money. 49 00:03:55,490 --> 00:04:01,250 We bought a lot of compute power, but we use it only on a single month of the year. 50 00:04:01,580 --> 00:04:03,290 And that's a problem. 51 00:04:03,540 --> 00:04:07,430 And this is the exact problem the cloud tries to solve. 5331