Jayawardena, SGopura R.A.R.C2026-04-022023978-166846860-9https://rda.sliit.lk/handle/123456789/4926In the introduction, what decision making is and the significance of the decision making was introduced. Few popular decision-making techniques were listed out and three rational techniques were discussed in a nutshell. Then Professor Saaty's seminal work, Analytical Hierarchical Process (AHP) was described, starting with the evolution of AHP and moving towards its practice through a four-step process. The AHP generates weights on a relative ratio scale with an input of measurements on a standard scale and due to the normalization process linearity of the results was destroyed. Finally, the four-step analytical hierarchical process was illustrated through an example of the selection of a job. During the progression, outcomes of the key theoretical aspects have been touched on without providing proof.enAnalytical hierarchical processdecision makingBook chapterDOI: 10.4018/978-1-6684-6859-3.ch011