Mux, a video platform for developers, has raised $105 million in a Series D funding led by Coatue; along with existing investors Accel, Andreessen Horowitz (a16z), and Cobalt, with new participation from Dragoneer.

This latest investment brings Mux's total funding to $175 million and raises its valuation to over $1 billion.

Mux offers real-time performance monitoring and analytics for video streaming, helping publishers deliver better quality of experience to their viewers.