RANCANG BANGUN TICKETING ONLINE JALUR PENDAKIAN GUNUNG SLAMET BERBASIS WEBSITE MENGGUNAKAN METODE EXTREME PROGRAMMING (Studi Kasus: Jalur pendakian Gunung Slamet via Bambangan)

Indonesia consists of many islands that have mountainous areas that have very beautiful scenery. Mountain climbing tourism is a means of education to love Indonesian nature more. In the industrial era 4.0, a lot of work has been done online, one of which is that any administration can now become paperless, as well as mountaineering administration. The purpose of this research is to produce an online climbing ticketing system in order to minimize errors in an administration that is done manually, which cannot be said to be effective for one reason or another. And aims to speed up the process of ticketing/mountain climbing registration. So, a website-based online ticketing system for climbing Mount Slamet was made using the extreme programming method. The application of extreme programming methods in application development results in development being carried out with a minimal number of crew and can be carried out quickly so that the results of the website engineering process become efficient, adaptive and flexible. The test results using black box testing are in accordance with the test plan and required specifications. And the test results using user acceptance testing, was successfully run and as expected up to 92.8%, It is concluded that the website-based online ticketing system for climbing Mount Slamet can be used to assist the online ticketing/registration process at the Mount Slamet climbing basecamp via Bambangan.