What Is Cloud Computing?
Before and after the cloud: what changed, and why it matters.
Every modern software company runs on the cloud. If you're pursuing a career in DevOps or engineering, cloud literacy isn't optional, it's foundational.
Cloud Computing: The Big Picture
You
need infrastructure
Internet
access anywhere
Cloud Provider
AWS / Azure / GCP
Compute
EC2, virtual machines
Storage
S3, object storage
Database
RDS, managed DB
Cloud computing is compute, networking, storage, and other services, managed by someone else, delivered over the internet. Providers build massive datacenters and rent out pieces of that capacity to anyone who needs it.
Before the cloud, getting a server meant buying hardware and waiting weeks. After the cloud, it means a few clicks and a few minutes, with someone else handling the physical side entirely.