Enterprise software company CoreOS took its overall funding to $20m with a $12m series B round led by Google Ventures.

Google Ventures, the corporate venturing unit of diversified internet company Google, led a $12m funding round for US-based enterprise software producer CoreOS on Monday.

The round also featured venture capital firms Kleiner Perkins Caufield & Byers, Fuel Capital and Accel Partners, the three investors in CoreOS’s $8m series A round in June 2014.

The company announced the funding at the same time as it launched Tectonic, an enterprise software stack enabling businesses to run containers for Linux.

Dave Munichiello, partner…