? Amazon EC2 Makes It Easier to Launch Windows Instances with Fast Launch (May 2025 Update)

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AWS just rolled out a sweet update — you can now launch Windows EC2 instances using EC2 Fast Launch without needing a Launch Template or Default VPC. ?


TL;DR: Just the AMI ID is enough to use EC2 Fast Launch for Windows instances. Simpler, faster, and great for automation workflows.
? What is EC2 Fast Launch?


EC2 Fast Launch reduces the launch time of Windows EC2 instances by pre-initializing AMI snapshots in the background. This means:

• Faster boot times
• Less wait for RDP or app availability
• Better scalability for Windows fleets

?️ What’s New?


Previously, to use Fast Launch, you needed:

• A Launch Template
• A Default VPC

With this update:

? Both are no longer required!
You can enable Fast Launch with just your Windows AMI ID. No extra infrastructure config needed.

? Real-World Example

Imagine you're a DevOps engineer preparing for a Windows patch testing session. You need to spin up 50 Windows EC2 instances quickly.

? Before:

You had to create a launch template and rely on a default VPC.

Now:

You just run this command:


aws ec2 enable-fast-launch \
--image-id ami-0abc1234567890xyz \
--resource-type snapshot

? Done! Your Windows AMIs are now Fast Launch-enabled. Instances will boot much quicker using optimized snapshots.

? Why It Matters

• Faster deployments for Windows workloads
• ? Simplifies automation (great for CI/CD)
• ? Reduces downtime during scaling or blue/green updates
• ? Works even without default VPCs — great for custom networking setups

? Have you tried Fast Launch in your Windows environments? Share your experience or thoughts in the comments below!

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