The site says it is a "distributed version management system."
Let's start with the idea of a version control system . , - -. , , , . ; - .
, , . , ; , .
, : , . , ( , , ) ( ). . git , "bisect", , , . .
: . . , , , . , , git, . ( , git) , . , , . , , , , , .
, git, , , git .
wikipedia: .