With the development of technology and times, we have faced various alternative problems. The problem of making decisions is one of the problems that is often encountered in everyday life. In the matter of decision-making, there are several methods that can be used, one of which is Multi-Criteria Decision Making (MCDM). MCDM is a method to make decision based on theory, process and analytical methods that involved uncertainty, dynamics and various aspects of criteria. This journal will discuss the use of one of the MCDM methods, namely Fuzzy AHP-TOPSIS. Basically, AHP breaks down unstructured situations into its components and organize these components or variables in a hierarchical order and assign a scientific value as a subjective assessment of the proportionate significance of each variable. Fuzzy theory is used to represent ambiguity, inaccuracies, lack of information, and partial truth. Then the TOPSIS method uses the principle that the preferred alternative must have the farthest from the negative ideal solution and the shortest interval from the positive ideal solution to find the optimal solution from the available alternatives.

Competition in the palm oil processing industry in Indonesia is very competitive. One of the factors that influence the good name of the company is the quality of the product produced. PT. XYZ is a palm oil processing factory with export and domestic market share. In order for the company to be able to compete with other companies engaged in similar industries, the company is required to need to carry out strict checks on product quality. PT. XYZ faces several obstacles to meet the quality standards of its main products namely Crude Palm Oil (CPO). The problem that is often found related to quality in CPO is the quality of CPO that does not meet consumer standards even though the company has implemented quality control in CPO production. This can reduce consumer confidence in the products sold by the company. CPO product quality standards set are free fatty acid levels (FFA) (<5%), water content (<0.15%) and impurities content (<0.02%). This study aims to determine what types of defect affect the quality of CPO and what causes the defect. This research uses seven tools method consisting of stratification, check sheet, histogram, pareto diagram, scatter diagram, control chart and cause and effect diagram. From the results of the Pareto diagram analysis it appears that the dominant defect that occurs in CPO is high free fatty acid levels with a percentage of 39.3%, then followed by defect with high impurities content of 35.4% and high water content of 25.3%. By using the Pareto 80/20 principle, the defect factor which is further analyzed is the defect of high free fatty acids and high levels of impurities. Through scatter diagrams and correlation analysis, the value of r = 0.5, where the value indicates that high free fatty acid defects and high impurities have a positive effect on the number of defects. By using a causal diagram analysis (fishbone diagram) it was found that the factors causing the high level of damage to this palm oil product are influenced by 3 main factors, namely raw materials, humans, and machinery.

In the era of rapid technological development, people use information and communication technology to buy and / or sell goods and / or services via the internet. Based on a survey conducted by the Central Statistics Agency (BPS), it shows that of all data collection efforts, only 15.08% were e-commerce businesses. This shows that the business done via the internet in Indonesia is still low. This can be caused by several obstacles, one of which is customer satisfaction. Customer confidence will be built when customer needs and satisfaction are met through quality standards. So that customer satisfaction becomes an important parameter in building a sustainable business. This research was conducted to evaluate and select the quality of e-commerce services using Fuzzy AHP. Determination of criteria and weight of criteria is built based on expert consensus using the Delphi method. After that, the consistency calculation is carried out using the AHP method. In the FAHP method, the weight calculation for each alternative is assessed. In the FAHP method, the highest order of weight values is Tokopedia (0.3680), Bukalapak (0.3190), Shopee (0.1735) and Elevenia (0.1394).

Economic growth, technology and social culture has driven changes in consumer behavior and needs that continue to grow, one of which is the need to continue to improve themselves. This is supported by the number of beauty clinics that stand. As a company engaged in the field of suits, beauty clinics must be able to make consumers feel satisfied with the services provided. This research helps consumers determine the beauty clinic services that consist of 3 alternatives, namely Erha Clinic, London Beauty Center and Natasha Skin Care. The method used in this study is the Analytical Hierarchy Process (AHP) method. The AHP method will break down complex multi-factor or multi-criteria problems into a hierarchy. Where with hierarchy, a complex problem can be broken down into groups which are then arranged into a hierarchical form so that the problem will appear more structured and systematic. This research will produce priority weight values for each beauty clinic, which based on the largest weight is an alternative beauty clinic with the best service quality.