Today, online web sites are already available in different types of business sectors such as banking, insurance, stocks, auctions and airline industries, and so on. The Internet is becoming an integral part of everyday life and is playing an increasingly important role within the global market and community. Not only does it provide a fast and effective means of communication, and a far-reaching marketing and promotional platform, it is also a powerful new research tool in marketing. The evolution of the computerised reservation systems in the Airline industry indicates the fast response speed towards this new business environment. Initially Japan Airline and Air Canada are only using their web sites as a promotional and communication tool. However, as there is a rapid growing potential in the electronic market in the late 1990s, Ryanair have pursued their lowest fares airline strategy into their first web site and their success was beyond their estimated target. Evidences have shown that there is increasing number of Irish Internet users to book their holidays through online web sites. Hence, the awareness of the e-commerce management are developed and the main focusing areas such as customer relationship management, web content management and security problems are the most popular issues concern in today electronic business.