During Phase 1 when the application is installed, there will be no noticeable impact to computers and a reboot will not be required. On Mac devices, there will be a new application listed under your "Apps" called "Falcon." On PC devices, there will be a new icon that shows in the system tray (lower right corner) called "CrowdStrike Falcon Sensor."
During Phase 2, when Cylance is disabled and CrowdStrike Falcon activated, there should be no noticeable notifications or service impacts during this change.