what does in delivery mean typically signals that a package is either en route to the final destination or actively being delivered. Carriers like USPS, FedEx, and DHL use this status near the end of the shipping journey. Customers often check for this update when they are expecting same-day arrival. Sellers and fulfillment centers must monitor these updates closely to ensure successful handoffs and respond quickly if delivery fails. Real-time tracking data boosts buyer confidence and reduces inquiries about package location, particularly during high-volume periods.