IDC predicts the Software-as-a-Service (SaaS) market will grow to $99 billion by 2020, growing five times as fast as traditional software. Effectively delivering SaaS requires companies to sell not only a software product but accompany it with a range of complementary services. Adding users quickly and easily; developing new features the market is keen on; and working on API integrations are some of the challenges SaaS providers must overcome to build margins and ultimately grow market share.