Align Technology makes and sells Invisalign clear aligners — custom-made, removable, transparent plastic trays that gradually straighten teeth. Orthodontists and general dental practitioners (GPs) prescribe Invisalign to patients ranging from children as young as six through adults. Align sells directly to licensed dental professionals, who must complete Align training to prescribe Invisalign, creating a base of over 296,000 active trained doctors globally. Align operates two segments: Clear Aligner (~80% of revenue) and Systems & Services (~20%). The Clear Aligner segment spans treatment packages by case complexity, from Invisalign Express for minor corrections to Invisalign Comprehensive for severe malocclusion, plus Invisalign First for young children, Invisalign Go for GPs, Vivera Retainers, and newer products like the Invisalign Palatal Expander. Systems & Services is primarily the iTero intraoral scanner and exocad CAD/CAM software for dental labs. Align earns revenue primarily through per-case fees when doctors order treatment packages, with volume and average selling price as the key drivers. Align's growth strategy centers on international expansion, growing the teen and kids category, expanding the GP channel, and deepening partnerships with dental service organizations (DSOs), which represent ~25% of volume and are growing faster than individual practices. Align is also transitioning aligner manufacturing from thermoforming to direct 3D fabrication, which management expects to become margin-accretive in 2027-2028.