Netflix is a streaming and rental company that began in 1997, offering DVD rentals by mail. It now has over 50 million streaming subscribers globally and a large streaming library available on all major devices. Netflix disrupted the market by introducing streaming while also offering DVD rentals. It has faced challenges like raising prices and separating streaming and DVD plans but has grown through expanding internationally and producing original content like House of Cards. While competitors like Amazon and Hulu are growing, Netflix has the largest library and remains the market leader in online video streaming.