Google-backed website optimisation company Optimizely has now raised almost $90m in funding after closing its series B.

Optimizely, the US-based creator of a website optimisation platform, has secured $57m in a series B round led by venture capital firm Andreessen Horowitz and featuring Benchmark Capital and Bain Capital Ventures.

Benchmark led a $28m series A round for Optimizely last year, in which Google’s corporate venturing fund Google Ventures participated alongside Bain Capital, Battery Ventures and InterWest Partners. Google previously invested in a $2m seed round in 2012 that also featured Felicis Ventures, but not in the company’s…