Any new technology faces this challenge. It has to convince people(users) before they become willing on accepting and adopting new technology.
A recent survey from the International Association of Outsourcing Professionals (IAOP) found two-thirds of outsourcing customers currently do utilize or have plans to implement cloud computing solutions. Eighty percent of those surveyed indicated their organization intended to deploy more outsourcing services in the next year.
In a recent Forrester report titled "Sizing the Cloud," it estimates a move from $40.7 billion spent on the global market for cloud computing in 2011 to more than $241 billion in 2020. The public cloud, which is under considerable scrutiny for security risks, will account for more than 66 percent of the total in 2020.