Hospitality management for others; business management of hotels; managing and operating hotels and business conference centers of others; restaurant management for others; event space management for others; offering business management services in the establishment and/or operation of hotels, restaurants, and event spaces; human resources management; accounting services; accounting advisory services; business administration and management; marketing services in the field of hospitality; business risk management services; sales promotion services for third parties; sales management consultancy; business management consultancy in the field of corporate travel.