The cloud computing technology company had raised $38.5m but has closed citing delays in the maturation of the market.

Nebula, a US-based cloud computing technology company backed by cable and telecommunications company Comcast, is shutting down after four years.

Founded in 2011, Nebula took two years before officially launching its product, a system that turns existing server rooms into high-performance data centres, in 2013.

Nebula raised $25m in a 2012 series B round led by Comcast’s corporate venturing unit, Comcast Ventures. The round also featured Highland Capital and Kleiner Perkins Caufield & Byers (KPCB), the two investors in a…