Airware, a San Francisco-based drone stratup, has raised $25m in Series B financing to develop a cloud operating system for drones.

Airware creates software, hardware and cloud service platforms for the operation of commercial drones, and it helps companies use autonomous commercial drones to collect information the companies require.

Airware CEO Jonathan Downey said: "Commercial drones are creating a revolution in insights and countless industries around the world will soon benefit from access to aerial information that, until now, has been too difficult, dangerous, expensive or downright impossible to get.

"To help organisations use drones for any commercial application, we’re building a platform that anyone can customize and build on top of.

"This funding will accelerate our efforts and we are extremely fortunate that high-caliber investors like Kleiner Perkins are partnering with Airware."

Airware has previously worked with commercial drone companies like Cyber Technology and Delta Drone on a beta platform, and also partnered with MIT to evaluate the delivery of medications using its commercial drones.

To date, Airware has raised $40m, which includes a round of Series A funding of $12.2m led by Andreessen Horowitz with Google Ventures along with Felicis Ventures and First Round Capital.

Previously, the company also received seed financing from Google ventures along with other partners.