One of the world's largest consulting firms, Deloitte Consulting serves customers in industries such as aviation, consumer products and services, energy, financial services, health care, manufacturing, and technology, as well as government agencies. The firm's areas of expertise include human resources, information technology services, outsourcing, and strategy and operations. Along with accounting firm Deloitte & Touche, Deloitte Consulting is a unit of Deloitte LLP, which in turn is an affiliate of global accounting powerhouse Deloitte Touche Tohmatsu. Other Deloitte LLP units offer financial advisory and tax services.