EC2 on Simple Enough Blog

Why AWS Spot Instances Become Impossible to Get in December

Mon, 01 Dec 2025 17:08:49 +0200

I. Why AWS Spot Instances Become Impossible to Get in December

EC2 Spot Instances are a fantastic way to save 50–70% on your AWS compute costs.
They use the unused capacity of AWS data centers… but in December, this unused capacity almost completely disappears.

Result:

Auto Scaling Groups fail to launch new instances
deployments get stuck
“insufficient capacity” everywhere
Spot interruptions become much more frequent

If you’ve experienced this, rest assured: it’s not your fault, and not a configuration issue.
It’s a seasonal phenomenon, and it happens every single year.

Interview EC2

Mon, 09 Jun 2025 15:55:01 +0200

I. What is Amazon EC2 and what is it used for?

AWS Expert: Amazon EC2 (Elastic Compute Cloud) is an on-demand infrastructure service that allows you to launch virtual servers — called instances — in the cloud. It is used to host web applications, run data processing, serve as development environments, or simulate production loads.

What makes EC2 powerful is its scalability and flexibility. You can start with a small instance for testing, then scale up to high-capacity clusters without switching platforms. Developers also love the full control they get over configuration, open ports, attached disks, and more.

3 Simple Ways to Save Up to 90% on EC2 Costs: Spot Instances

Fri, 02 May 2025 17:08:49 +0200

I. Introduction to Spot Instances

Amazon EC2 Spot Instances offer a powerful way to drastically reduce cloud computing costs. Designed to utilize unused Amazon EC2 capacity, these instances are available at a price up to 90% lower than On-Demand instances.

While these savings are appealing, Spot Instances are not suitable for all workloads. They are ideal for flexible, interruption-tolerant, or distributed jobs such as data processing, machine learning training, or performance testing.