AWS Launch Templates Pros vs Cons and Theory vs Practice: How to Use Them in the Real World

December 15, 2021

We'll introduce AWS Launch Templates and explain what they do. More importantly, we'll talk about the Theory vs Practice of using Launch Templates. How to actually use them in practice.

What Settings Can We Change at Launch Time?

Launch Template EC2 Instance AutoScaling Group Spot Fleet
AMI yes no no
Key Pair yes no no
Security Group yes no no
Instance Type* yes yes* yes
Subnet yes yes yes
IAM Role yes yes no
User Data yes yes no
  • As long as spot is not set in the launch template.

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