Also from 1999, Bhusri has been a partner at Greylock, a software investment fund which has backed companies including Facebook, Groupon, Dropbox, Tumblr and Airbnb. At Greylock he has been an investor in cloud technologies, with an emphasis on applications, data center infrastructure and middleware, and serves on the boards of a number of companies in which Greylock has invested, including Cloudera and Pure Storage.