Step 1 : Introduction to the question "Which company was once known as "Quantum Computer Services Inc."?"
AOL was founded in 1985 as Quantum Computer Services, an online services company by Jim Kimsey from the remnants of Control Video Corporation. In 1991, Quantum was renamed America Online. AOL became one of the early pioneers of the Internet, providing dial-up service to over 30 million members worldwide. In 2001, at the height of its popularity, it purchased the media conglomerate Time Warner in the largest merger in U.S. history. AOL rapidly declined thereafter, partly due to the decline of dial-up and rise of broadband.