Most companies believe in using private clouds but have issues with control, security, and compliance. Small and medium sized businesses will want to use their own data centers and will start to run on SaaS services with laaS or PaaS. Larger companies will be slower about replacing their traditional data centers with cloud technology.
Read the full article here:
http://forwardthinking.pcmag.com/none/325351-when-big-companies-don-t-trust-cloud-computing