The advancement in information and communication technology (ITC) has greatly influenced the business transactions. The adoption of wireless technology & emergence of mobile devices has led to automation in the hospitality industry. Business in hospitality industry such as restaurants can be improved with the combination of wireless and mobile technologies. The competition in restaurant business have increased with the advancements in food ordering techniques. The earlier food ordering system was entirely a manual process which involved waiters, pen and paper. The waiter had to note down orders from customers, take these orders to kitchen, update them in records and again make bill. Even though this system is simple it may involve human errors in noting down the orders. To overcome these limitations in manual system some systems were developed later like PDA based systems and multi-touchable restaurant management systems to automate food ordering process. Nowadays web services technology is widely used to integrate heterogeneous systems and develop new applications. Here an application of integration of hotel management systems by web services technology is presented. Digital Hotel Management integrates lots of systems of hotel industry such as Ordering System Kitchen Order Ticket (KOT), Billing System, Customer Relationship Management system (CRM) together. This integration solution can add or expand hotel software system in any size of hotel chains environment.