One day last fall, a drone lazily circled above Hahn Estate Winery, home to 1,100 acres of grapes in California’s Santa Lucia Highlands. The drone, a five-pound model airplane, wasn’t there merely to take photos. Fitted with visual and multispectral sensors, it was collecting various kinds of data—information to help Hahn monitor the health of its vineyard and resist the effects of California’s fourth consecutive year of drought. Winegrowers worry about two things: the quality of their grapes and how many they can produce. By running software algorithms made for monitoring crops, a drone can help the winery determine both. Welcome to the connected agriculture business. Yes, even the Internet of things has gone farm to table.