Abstract: The website is quickly becoming a critical advertising and marketing presence for an adventure tourist business.The traditional two-tier model shows striking weaknesses that make the development and maintenance of applications much more expensive.Multi-tier architecture endeavors to solve these problems.With multi-tier applications,the client provides only one layer,i.e.,the user interface.The business rules are performed on a system between the user interface and the data storage.Using this approach,a number of benefits during the application’s life cycle can be achieved,including reusability,flexibility,manageability,scalability,multi-language support and improved security.This paper deals with the design and implementation of an online hotel booking system with multi-tier architectural approach.The system uses Microsoft Visual Basic for desktop application and Structured Query Language (SQL) Server,HTML with VBScript and Active Server Pages (ASP) for the web application.The system enables the prospective guests to book different types of rooms online,keeps the database on guests,tracks when guests check in or check out and issues voucher at the time of checking out.

Key words: multi-tier architecture, ASP, VBScript, SQL, HTTP, check in, check out