Managed services are the practice of outsourcing day-to-day management responsibilities and functions as a strategic method for improving operations and cutting expenses. This can include outsourcing HR-activities, production support and lifecycle build/maintenance activities. The person or organization that owns or has direct oversight of the organization or system being managed is referred to as the client, or customer. The person or organization that accepts and provides the managed service is regarded as the service provider or MSP (Managed Service Provider).
The terms IT Managed Services or Managed IT Services mean the exact same thing. This is a form of Managed Services that specializes in Information Technology (also known as “IT).