Internal bundling and streamlining of similar services previously spread over many departments, usually in a large organization. Services referred to are normally non-production related, such as ICT, Indirect Purchasing, Sales, Logistics and HR (including Contingent Workers). The benefits and purpose of an SSC are efficiency, cost reduction (scale) and expertise. Internal acceptance can be a challenge to an SSC, if the complexity of the inevitable change-process is underestimated. SSC is an internal concept. Similar services bundled externally are referred to as Outsourced Services or a Joint Venture, in case more companies decide to launch an external center for similar services.