WebMail 
Support 
IT services refers to enable the organizations to access the business processes with the application of busines process and technical expertise.
The IT services can consisting by the various type of skills that are employed to deliver the services (architect, build, execute). There are also different area of services like application services, business process services and infrastructure services.
If above services are outsourced, they are referred to as applications outsourcing (AO), business process outsourcing (BPO) and infrastructure outsourcing.