Direct Insertion

Direct insertion (also called direct inject or direct to orbit) is a launch profile where the upper stage delivers the payload directly to its final operational orbit, rather than to a transfer orbit from which the satellite must raise itself. For GEO missions, this means the rocket delivers the satellite all the way to geostationary altitude and circularises there — the satellite arrives ready to operate immediately. The trade-off: direct insertion uses significantly more rocket performance (reducing payload mass to orbit) but preserves the satellite's onboard fuel for station-keeping, extending operational lifetime. SpaceX offers both GTO delivery (cheaper, satellite does circularisation) and direct GEO insertion (more expensive, satellite saves fuel).