The Alphabet and Salesforce-backed online survey platform, valued at $2bn as of 2014, has revealed it has confidentially filed to go public.

US-based online survey platform SurveyMonkey confidentially filed for an initial public offering yesterday that would enable internet and technology group Alphabet to exit.

SurveyMonkey operates a subscription service that allows clients to create surveys that can be distributed through a range of channels including email, web, social media, online chat and mobile platforms. The feedback can then be scoured using its data analytics tools.

The company was acquired by private equity firm Spectrum Equity in 2009 but spun back out…