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Launch Templates
ОглавлениеLaunch templates are similar to launch configurations in that you can specify the same settings. But the uses for launch templates are more versatile. You can use a launch template with Auto Scaling, of course, but you can also use it for spinning up one‐off EC2 instances or even creating a spot fleet.
Launch templates are also versioned, allowing you to change them after creation. Any time you need to make changes to a launch template, you create a new version of it. AWS keeps all versions, and you can then flip back and forth between versions as needed. This makes it easier to track your launch template changes over time. Complete Exercise 2.5 to create your own launch template.
If you have an existing launch configuration, you can copy it to a launch template using the AWS web console. There's no need to create launch templates from scratch!