NSE offers its infrastructure for conducting online IPOs through book building, to get rid of certain inherent disadvantages faced by issuers and investors such as tremendous load on banking and postal system and huge costs in terms of money and time. According to Chauhan, "Online IPOs should not be restricted only to the book-building issues. They should also be extended to issues that have fixed prices.'' This will help reduce the time lag between the closure of the IPO and its listing on the bourses. The biggest advantage of marketing IPOs online would be the reduction in time and paper work.