In my last article, we discussed the support options' costs and EC2 pricing. This is a large topic, so I'm going to have to have a 3rd part since S3 takes up a lot. I don't believe the exams will ask about specific prices, as these can always change. But the important thing is understanding the relative pricing, so you could be able to make intelligent cost analysis decisions.
EC2 is essentially a virtual server in the cloud. It can be available within minutes after setting it up. Compare that to how long it would take to provision and prepare a physical server in your own datacenter. Even ordering it and awaiting initial configuration and shipment can take weeks. General knowledge about EC2 is one of the key categories in the AWS Certified Cloud Practitioner exam.
The AWS Certified Cloud Practitioner exam is the most basic AWS certification you could obtain. It certifies that you have a basic knowledge of the core features and benefits of AWS. It's a great kickoff point if you want to work towards other AWS certifications.
The AWS Serverless Application Model (SAM) is a CloudFormation transformation macro used to ease the creation of serverless applications. We can think of it as a lightweight CloudFormation template with the core purpose of creating serverless infrastructure as code.
S3 is object-based flat file unlimited storage. It's unlimited, but that doesn't mean we should throw files up there without thinking -- storage still costs money. It's not block-based, so it's not meant for storing operating systems or live databases. But any type of file can be stored (including database file backups), and each can be from 0 bytes up to 5 TB. General knowledge about S3 is one of the key categories in the AWS Certified Cloud Practitioner exam.
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