Basic Services in AWS

So far, we've been talking about AWS like it's just one thing, but it's not. 0:00 AWS is actually a whole constellation of services 0:04 which can be used together or separately. 0:07 Each service in AWS has it's own name and they all do different things and 0:10 cost different amounts. 0:14 In this video, we'll talk about the two biggest most popular services in AWS. 0:16 S3 and EC2. 0:20 S3 stands for simple storage service, and 0:23 it's probably the simplest service that AWS offers. 0:26 As the name implies, S3 is used for storage. 0:29 You put data into it, and then take it back out again. 0:32 That's all. 0:35 Nothing particularly complicated. 0:36 S3 will hold whatever data you want for as long as you want. 0:38 As we discussed in the last video, the cost for 0:41 using S3 is based on space multiplied by time. 0:44 The more data you store, and the longer you store it, the more it will cost. 0:47 But don't worry, S3 is remarkably cheap. 0:52 You could store 100 GB in S3 for a year. 0:55 And it would cost less than $50. 0:58 Then there's EC2. 1:00 EC2 stands for elastic compute cloud, and it's used for processing and computation. 1:02 With EC2, you basically rent a computer from Amazon and 1:08 you can run whatever programs you want on that computer. 1:11 This computer is called an instance, and 1:14 it works a bit differently from your computer at home. 1:16 For starters, an EC2 instance doesn't come with a hard drive. 1:18 In order to read and write data on an EC2 instance, you need to connect it to one of 1:22 the data storage services that AWS provides, such as S3. 1:26 The cost for using EC2 is also based on space multiplied by time. 1:30 For EC2, the space part of the equation is based on factors like processor speed, 1:34 write speed, available RAM, and so on. 1:39 The time part of the equation is based on how long the instance is running. 1:43 You can also run multiple instances simultaneously. 1:47 You can run one instance for eight hours or two identical instances for 1:50 four hours and it costs the same amount. 1:54 It's important to point out that the cost is based on time not activity. 1:57 An EC2 instance that is working as hard as it can 2:01 costs the same amount as an EC2 instance that is sitting idle doing nothing. 2:05 Amazon keeps on charging for the instance as long as it's running. 2:10 So if you're not using an instance, you can shut it down to save money. 2:13 EC2 can be very cheap, or very expensive, depending on how you use it. 2:17 Fortunately if you're new to AWS, Amazon will let you try it out for free. 2:21 For the first year after you sign up for an AWS account, Amazon will let you store 2:26 a little bit of data on S3 and run a small EC2 instance for no charge. 2:30 Pretty cool, right? 2:35 Amazon is hoping that you'll start using AWS, even for free, so that they can start 2:37 charging you money after your free trial expires at the end of one year. 2:41 Check out the teacher's notes for more information. 2:44 There's a lot more to AWS than just S3 and EC2, 2:48 but those two services are the most important ones to know. 2:51 In the next stage of this course, we'll dive into S3 and 2:55 learn how to use it to store and retrieve files. 2:58 We won't be spending any more time on EC2 in this course, but 3:00 don't worry, there's another course for that coming up in the future. 3:03