US enterprise and public sector IT spending is forecast to grow 5.6% in 2011, which is 2.6% more than the US GDP growth of 3% in 2011, according to IDC.

Survey respondents indicated the top IT initiatives for 2011 at large enterprises are security (31%), followed by business analytics (19%) and 17% of respondents expect to make investments in smart technologies.

Healthcare, professional services, and communications & media are the vertical markets which are expected to achieve highest growth rates.

The survey by IDC has included more than 5,700 US respondents who shared near-term spending plans on IT hardware, software, business analytics, IT services, business process outsourcing, and telecommunications services.