Okta Inc., a San Francisco startup which develops software that acts as a cloud connector in order to tie together the software applications that a company and its workers use, raised $75 million from existing shareholders, including the round’s lead investors Andreessen Horowitz, Greylock Partners and Sequoia Capital. After the new funding, the valuation of the startup toped $1.2 billion! Okta’s software makes further easier for workers to have a single, secure login for the Web services they use for their job.