On Prem
Adjective · Slang & Abbreviations
Definitions
Short for on-premises, meaning software or infrastructure runs in a customer's or organization's own facilities rather than in a public cloud. The phrase is especially common in enterprise sales and deployment discussions.
In plain English: Hosted in the company's own building or datacenter instead of the public cloud.
Example: "The bank requires an on prem option because customer data cannot leave its datacenter."