While this is mostly unrelated to the security specialty exam, it had me screaming at the screen (apologies, Ryan! I just want to get it off my chest). At 7:45 Ryan says "everything else I’m going to leave as default." One thing that drives me nuts is that AWS provides "Paravirtual" as the default virtualization type. If you jump back to 2:20 you’ll see that Ryan used the latest Amazon Linux AMI which is an HVM image. To prevent future heartache, the virtualization type should have been changed to HVM. And you see exactly what that heartache entails at 8:36 when trying to spin up a new instance, the majority of instance types are not available.
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I walked through the steps and had HVM was the default for when I was creating the AMI image. I made sure to change it to PV before creating the AMI to mirror what was shown in the video. I then went back to create another image and the default was what was last used when creating an image.