September 2018
Beginner to intermediate
174 pages
3h 27m
English
Content preview from Designing AWS Environments
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Classic EC2s
EC2s were first introduced by AWS back in 2006. Back then, there was only one big public network in which to launch your instances. Every instance was automatically assigned a public and private IP address, controlled by AWS. If you stopped your instance for any reason, AWS took back your IPs, and when you started it up again, you got new ones.
Since every instance had a public IP address, they were all essentially public. So you had to rely on security groups to restrict access to your databases and other instances that you wanted to keep private, and the security groups only allowed you to specify inbound rules. All outbound traffic was always allowed. In 2009, AWS launched VPCs and encouraged customers to launch instances ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.