Intracranial bypass surgery has become a fundamental intervention in neurosurgery for managing cerebrovascular disorders, evolving significantly since its introduction in 1969. This technique establishes a connection between extracranial and intracranial blood vessels, facilitating enhanced cerebral blood flow and offering an effective means to prevent neurological morbidity and mortality. It is particularly vital in treating Moyamoya disease, where it aids in circumventing cerebral ischemia by restoring adequate blood supply. As neurosurgical techniques advance, intracranial bypass continues to be an essential procedure in the armamentarium for cerebrovascular disease management, reflecting its pivotal role in improving patient outcomes in complex neurovascular conditions.