It seems that the world of communication today cannot be separated from technology. The use of communication technology makes it increasingly sophisticated. Every year, even every month, gadget companies always innovate their products with the aim of attracting consumer buying interest. Brand awareness and market share are closely related in the world of marketing. This study aims to identify and analyze the impact of brand image and market share competition on consumer purchasing interest in Indonesia. Data collection uses a quantitative approach using an associative explanatory survey method with data collection techniques used namely questionnaires, observation and interviews. The number of samples used in this research was 99 respondents. The results of the research study are that the use of brand image in Apple products has a strong level of influence on consumer behavior.

PT Kereta Api Indonesia (KAI) is a company that monopolizes unrivaled rail transport services, but on Java Island it is vulnerable to competitors in other transport services sectors in the world. The purpose of this study was to find out whether the influence of price and quality of service on the satisfaction of railway consumers in the city of Solo Raya. Sampling technique using quota sampling and random sampling techniques with respondent criteria is consumer satisfaction in using railway services, which is 51 respondents. Data collection is done using questionnaires distributed online or electronically using Google Form support. The results of the study showed that the influence of price and quality of service has a significant influence on consumer satisfaction.

In the modern era, Muslim fashion, one of which is the hijab, is experiencing developments every year. Hijab is Muslim clothing that is very popular with Muslim women in Indonesia. This incident happened because Muslim women in Indonesia are aware that wearing the hijab is an obligation. This provides an open space for companies to produce Muslim clothing, especially hijabs, to become the main target market in the country. The purpose of this research is to find out whether promotions and testimonials have an influence on purchasing interest through the mediating variable of consumer trust in Buttonscraves products. There were 51 participants in this study and data was collected through an online survey using a Google form. The sampling technique was carried out using purposive sampling techniques and primary data types, as well as collecting questionnaires. The results of the analysis show that promotions have a significant effect on buying interest, testimonials have a significant effect on buying interest and testimonials have a simultaneous effect on buying interest in Hijab Buttonscraves.

This research aims to determine the influence of price, promotion and rating on purchasing decisions in the Shopee marketplace. The approach used in this research is a quantitative approach with an explanatory research type. The sampling technique in this research was a purposive sampling technique with the sample used amounting to 100 respondents. The data collection technique uses online questionnaire distribution with the help of Google forms. Data analysis techniques in this research are validity test, reliability test, normality test, multicollinearity test, heteroscedasticity test, multiple linear regression test, coefficient of determination test, f test and t test. Based on the data research analysis, the results showed that there was an influence of price on purchasing decisions, there was an influence of promotion on purchasing decisions, there was no influence of ratings on purchasing decisions and the f test showed that there was a simultaneous influence of price, promotion and rating on purchasing decisions. The results of the coefficient of determination test show an r square value of 0.472, which means that the influence of the price (x1), promotion (x2) and rating (x3) variables simultaneously on the purchasing decision variable (y) is 47.2%.

This observation was made to determine the influence of product quality on the purchase decision of Iphone products among Surakarta residents. This observation used quantitative methods using manual data obtained by distributing documents or questionnaires and collecting responses from a sample of 59 participants. This observation uses Intelligent Partial Least Squares (PLS) analysis to evaluate the hypothesis, as well as using a quantitative approach. Based on the results of the Smart PLS analysis test conducted, it shows that product quality has a positive or significant effect on purchasing decisions.

This research was conducted on students of the Faculty of Law and Business, University of Duta Bangsa Surakarta. The purpose of this study was to determine the effect of discounted prices, live streaming and online customer reviews on purchase intention. The population in this study were students of the Faculty of Law and Business, University of Duta Bangsa Surakarta.  The development of technology at this time makes people live all instantaneously, not only consuming products but also selling products through e-commerce.  So that a lot of competition arises between content creators to market their products in order to attract consumers' buying interest. This study used a purposive sampling method with the criteria of active law and business students at Duta Bangsa University, Surakarta and having an active TikTok Shop account.  Which resulted in a sample of 100 respondents.  This research uses instrument test analysis, classical assumption test, hypothesis test, determination test (R square) and multiple linear regression.  The purpose of this study is to determine the effect of price discounts, livestreaming and online customer reviews on buying interest in the TikTok shop application, either partially or simultaneously.  In this study, all the independent variables are significant and have an effect on the dependent variable, namely buying interest.