Animals get most of their food by grazing on open fields. Common in regions with high rainfall and large land areas (New Zealand, Ireland, and portions of Latin America). Costs for feed are low, but milk output depends on weather and grass growth.

Cows stay indoors in barns. Feed, water, and climate are tightly controlled. Common in North America, Europe, and large commercial setups. Features high milk output and efficient health tracking, but requires high investment in housing and feed.

Combines grazing with indoor feeding. Animals graze during specific hours or seasons and receive supplementary feed or fodder in barns during bad weather or high production phases.

Practiced by small farmers in developing nations (India, parts of Africa). Animals are fed crop residues, roadside grass, or small plots of cultivated fodder. Manure goes back to the fields as organic fertilizer.

Modern high-tech barns equipped with automated milking machines and sensor-based health trackers that let cows choose when to be milked.