Why Spot VMs for cost savings in Azure? - Purpose & Use Cases

The Big Idea

What if you could cut your cloud VM costs by up to 90% without lifting a finger?

The Scenario

Imagine you need to run many virtual machines (VMs) for a project, but you have a tight budget. You try to start regular VMs one by one, paying full price for each, and it quickly becomes expensive.

The Problem

Manually managing VMs at full price means you pay more than necessary. You also waste time checking prices and turning off VMs when costs rise. This slow, error-prone process can blow your budget fast.

The Solution

Spot VMs let you use spare cloud capacity at a big discount. Azure automatically offers these cheaper VMs but may stop them if the capacity is needed elsewhere. This way, you save money without constant manual checks.

Before vs After

✗ Before

Create VM with standard pricing
Start VM
Monitor costs manually

✓ After

Create Spot VM with max price
Start VM
Azure manages interruptions and cost savings

What It Enables

Spot VMs enable you to run large workloads cheaply by using unused cloud capacity automatically.

Real Life Example

A data scientist runs many experiments overnight using Spot VMs, saving up to 90% on costs compared to regular VMs, and finishes work faster without extra budget.

Key Takeaways

Manual VM use can be costly and slow to manage.

Spot VMs offer automatic, discounted access to spare cloud capacity.

This saves money and lets you run bigger workloads efficiently.