What it is
An Azure VM is a rented computer in a Microsoft region. You pick a size, a disk, a network, and an image. It runs until you stop it or resize it.
Size is the trap. D32s_v3 looks serious in the dropdown. Your portal uses four cores under peak load. Bart counts the cores. He is not wrong.
EC2 is the AWS twin. Same rental model. Same "dev that lived forever" invoice pattern.
Why it matters in the meeting
JJ asks what a core is when the invoice arrives. Raja explains in one line. The VM gets resized. The original size stays on Bart's fourth monitor as folklore.
Reserved instances and schedules exist because humans overbuy and under-turn-off. Right-sizing is a meeting, not a vibe.
Real world
Availability sets and zones are how you avoid one rack ending your afternoon. A single VM with no backup is a single story with a bad ending.
Managed disks and snapshots are the restore story. "We have a VM" is not a backup.
An Azure VM is a computer with a monthly opinion. Buy the size you use. Tag an owner. Turn off what sleeps. The dropdown is not career advice.
What to ask
- What are the top five VMs by cost, and do their metrics justify the size?
- Which VMs have no owner and no shutdown schedule?
- Are production VMs zone-redundant where it matters?
- When did we last resize based on data, not fear?
You just knew a little more Jack than you did five minutes ago.
All concepts