On-Premise
ELI5 — The Vibe Check
On-premise (or 'on-prem') means your servers physically live in YOUR building — not in Amazon's warehouse. The company buys the hardware, sets it up in a server room, and maintains it. It's the old-school way before the cloud. Still required in some industries for security or compliance reasons.
Real Talk
On-premise infrastructure refers to computing resources physically located and managed within an organization's own facilities. The organization owns or leases hardware, handles all maintenance, power, cooling, and networking. Higher capital expenditure but maximum control, with no data leaving the organization's premises.
When You'll Hear This
"The bank requires data to be on-premise for regulatory compliance." / "We're migrating from on-premise to cloud over the next two years."
Related Terms
Cloud Computing
Cloud computing means using computers that live in someone else's giant warehouse instead of your own machine.
Data Center
A data center is a giant warehouse full of servers, cooling systems, and power backup.
Hybrid Cloud
Hybrid cloud is the mix of using your own on-premise servers AND cloud services at the same time.
IaaS (Infrastructure as a Service)
IaaS is when you rent the raw computer hardware in someone else's data center.
Managed Service
A managed service is when the cloud provider runs the thing for you — you don't patch it, back it up, or fix it when it crashes.
Self-Hosted
Self-hosted means you run the software on your own servers instead of using someone else's managed cloud version.