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Changes in the lifestyles of the younger generation in Padang City have significantly contributed to the growth of the culinary and entertainment sectors, especially in services for birthday celebrations and small banquets presented in aesthetic and personalized packages. In this highly competitive culinary business, a strong branding strategy is essential for building a recognizable brand image and attracting consumers. Improving product quality and quantity, diversifying offerings, and providing a wide variety of products are critical for creating added value and expanding market share. Equally important, effective promotion enables companies to communicate with consumers, influence purchasing decisions, and strengthen brand loyalty. The general equilibrium concept offers a framework to understand how interconnected markets respond to changes in supply, demand, and consumer preferences, highlighting the need for businesses to continuously evaluate and adapt their strategies. This study emphasizes that success in Padang City’s bakery and culinary service industry depends on the integration of branding strategies, ongoing product development, and targeted promotional efforts, ensuring competitiveness, customer satisfaction, and sustainable business growth.

PT Telekomunikasi Indonesia, Tbk is a State-Owned Enterprise (BUMN) company engaged in information and communication technology. PT Telekomunikasi Indonesia, Tbk (Telkom) which is equipped with a package (3-1) three services in one package or Tripel play with communication and data service facilities provided such as landline (voice), internet (Internet on Fiber or High Speed Internet), and interactive television services (Usee TV Cable, IP TV). This study aims to determine the effect of promotion and brand image on purchasing decisions with customer satisfaction as an intervening variable (Case Study on Indihome Company Customers (PT. Telekomunikasi Indonesia, Tbk Pematang Siantar Branch). this research is non-probability, namely convenience sampling with the population, namely all customers of PT. Telekomunikasi Indonesia, Tbk Pematang Siantar Branch and the sample used was 96 respondents. The data collection technique used is primary data in the form of questionnaires and secondary data obtained through documentation studies. The data analysis technique uses quantitative data processed with the SPSS version 29 program, namely the t test and the coefficient of determination (R2). The results obtained in this study show, 1) there is a significant effect of promotion and brand image on customer satisfaction, 2) there is a significant effect of promotion and brand image on purchasing decisions, 3) Customer satisfaction variables have a significant effect on purchasing decisions, 4) Customer satisfaction variables are not able to mediate between promotion and brand image on purchasing decisions.

The development of business in the current era is very promising, there are many opportunities and challenges for a company. Companies will compete with each other to be able to meet consumer needs, thus companies must be able to compete with other companies so that they can survive the competition that occurs Along with the times that have entered the Asean Economic Community (AEC), the era of globalization has resulted in many new businesses emerging which can lead to competition figures, quantitative research is research based on empirical philosophy with statistical data analysis with the aim of explaining and selling hypotheses. The researcher chose this type of quantitative research because he wanted to know and prove the effect of product quality and service quality on customer satisfaction 3Second in West Jakarta. This study used an associative design which can be used to see the effect of two or more variables. Based on the f testing criteria it can be seen that the significant value is 0.000 or less than 0.05, it can be stated that there is a significant simultaneous influence on promotion (X1) and product quality (X2) on purchasing decisions (Y). Brand image has a significant effect on product quality. On the results of the t test, a significant value of the brand image variable was obtained at 0.000 ± 0.05, which means that brand image has a significant effect on consumer satisfaction. Product quality has a significant effect on product satisfaction 3seconds. In the results of the t test, a significant value of the product quality variable is obtained at 0.000 0.05, which means that product quality has a significant effect on consumer satisfaction.