Information technology (IT) infrastructure are the components required to operate and manage enterprise IT environments. These components include hardware, software, networking components, an operating system (OS), and data storage, all of which are required to develop, test, monitor, control or support IT services to deliver IT services and solutions. Types of IT infrastructure include Traditional infrastructure like Main frames, data storage, and other equipment—are all managed and owned by the business within their own facilities. Cloud infrastructure which are remotely managed,, common infrastructure provided by third-party vendors, a subset of which can be Converged Infrastructure which groups multiple components into a single optimized computing package. For the less technical business decision Leader, it is also important to understand the difference between IT architecure and infrastructure so as not to put the "cart before the horse" in making IT acquisition decisions.. The experts listed in this section can provide the help and guidance needed to make the right selection for infrastructure and also its management.