Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

Fewer Letters	More Letters
DNS	Domain Name Service/System
Git	Popular version control system, primarily for code
RPi	Raspberry Pi brand of SBC
SBC	Single-Board Computer
SFTP	Secure File Transfer Protocol for encrypted file transfer, over SSH
SSH	Secure Shell for remote terminal access

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