IT services refers to the application of business and technical expertise to enable organizations in the creation, management and optimization of or access to information and business processes.

The IT services market can be segmented by the type of skills that are employed to deliver the service (design, build, run). There are also different categories of service: business process services, application services and infrastructure services.

Customers who purchase and/or use IT services do so with the intention to accomplish a certain objective. According to ITIL4, a service is any means of enabling value co-creation by facilitating outcomes that customers want to achieve, without the customer having to manage specific costs and risks.