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Cloud Computing · Intermediate

Launch Template

Versioned AWS configuration specifying AMI, instance type, key pair, security groups and other settings used to launch EC2 instances.

Definition

Launch templates store instance launch parameters and support versioning, mixed instance types and Spot options. They are the recommended way to configure Auto Scaling groups, replacing legacy launch configurations, which cannot be modified and lack newer features.

Example

Updating an Auto Scaling group to launch template version 5 rolls out a new AMI through instance refresh.

Exam tip

Launch configurations are deprecated; questions about mixing On-Demand and Spot require launch templates.

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