The Influence of Customer Service and Product Diversification on Customer Loyalty
DOI:
https://doi.org/10.37641/jimkes.v13i6.4245Keywords:
Customer Loyalty, Customer Service, Product Diversification, Strategies DiversificationAbstract
This study investigates the influence of customer service and product diversification on customer loyalty. The research addresses the question of how service quality and diversification strategies jointly shape loyalty in the Indonesian business context, where competition and evolving customer expectations demand both operational excellence and product innovation. Using a quantitative explanatory approach, data were collected from 377 customers through a structured online survey. The measurement model demonstrated strong reliability and validity, with all constructs meeting psychometric standards. Structural equation modeling with partial least squares revealed that customer service (β = 0.390, p < 0.001) and product diversification (β = 0.354, p < 0.001) both exert positive and significant effects on customer loyalty. The R² value of 0.467 indicates that these two variables explain nearly half of the variance in loyalty. The study discusses these findings by linking them to established theories, including SERVQUAL, the Ansoff matrix, and the commitment-trust theory. Results highlight that while customer service has a slightly stronger influence, the synergy of service and product strategies is crucial for sustaining loyalty. These findings provide theoretical contributions to loyalty research and practical insights for firms operating in emerging markets.
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Aboelmaged, M. (2021). E-waste recycling behaviour: An integration of recycling habits into the theory of planned behaviour. Journal of Cleaner Production, 278(1), 124-182.
Aga, M. K., & Singh, A. (2022). The role of entrepreneurship education on student entrepreneurial intentions: mediating effect of attitude, subjective norms, and perceived behavioral control. Journal of Business and Management, 28(1), 31-65.
Ahmed, T., Chandran, V. G. R., Klobas, J. E., Liñán, F., & Kokkalis, P. (2020). Entrepreneurship education programmes: How learning, inspiration and resources affect intentions for new venture creation in a developing economy. The International Journal of Management Education, 18(1), 100-327.
Aini, A. S. N., Darpito, S. H., & Warsiki, A. Y. N. (2022). Pengaruh service quality dan customer relationship management (CRM) terhadap customer loyalty yang dimediasi customer satisfaction. Jurnal Ilmiah Manajemen Kesatuan, 8(4), 61-64
Amerta, L., & Madhavi, I. (2023). Exploring service quality and customer satisfaction in the service industry: A mixed-methods analysis. Journal on Economics, Management and Business Technology, 2(1), 1-16.
Anismar, A., Akmal, S., & Radma, R. (2025). Marketing tourism based community based tourism (Cbt) In Aceh Selatan. Jurnal Sosiologi Dialektika Sosial, 11(1), 34-46.
Ardhana, N. A., Mariam, S., & Ramli, A. H. (2024). The role of corporate image, quality service and customer satisfaction to intention behavior and customer loyalty. Jurnal Ilmiah Manajemen Kesatuan, 5(3), 51-55.
Caldarola, B., Mazzilli, D., Napolitano, L., Patelli, A., & Sbardella, A. (2024). Economic complexity and the sustainability transition: A review of data, methods, and literature. Journal of Physics: Complexity, 5(2), 2-21.
Edo, J. J. R., Soma, A. M., & Sitorus, P. M. (2024). Factors influencing fintech adoption among MSMEs in Bandung, West Java, Indonesia. JASF: Journal of Accounting and Strategic Finance, 7(2), 283-299.
Erni, C. (2015). Shifting cultivation, livelihood and food security: New and old challenges for indigenous peoples in Asia. Shifting cultivation, livelihood and food security, 3(4), 45-50.
Fitri, M., Shar, A., & Fuadi, S. (2023). Pengaruh kualitas pelayanan, citra merek, dan kepercayaan terhadap loyalitas nabasah bank syariah indonesia kota bengkulu pasca insiden gangguan layanan. Fidusia: Jurnal Keuangan Dan Perbankan, 6(2) 88-90.
Franjkovic, J., Fosic, I., & Zivkovic, A. (2025). Application of machine learning algorithms in predicting customer loyalty towards grocery retailers. Business Management/Biznes Upravlenie, 3(2), 32-35.
Ge, H., & Shin, J. (2025). From eco-friendly to fashionable: an investigation into chinese consumers’ demand for paper handbags in all dimensions. Sustainable Futures, 2(2),100-629.
Geissdoerfer, M., Vladimirova, D., Van Fossen, K., & Evans, S. (2018). Product, service, and business model innovation: A discussion. Procedia Manufacturing, 21(1), 165-172.
Gül, Y., & Altuntaş, C. (2024). Do ESG ratings affect stock prices? The case of Developed and Emerging Stock Markets. Sosyoekonomi, 32(60), 243-258.
Gupta, A., Trehan, R., & Gandhi, S. K. (2019). Service Quality Through the Lens of SAP-LAP Methodology: A Case Study. In Operations Management and Systems Engineering: Select Proceedings of CPIE 2018 (pp. 111-132). Singapore: Springer Singapore.
Juharsah, J. (2024). The impact of social ties on customer loyalty: Mediating effects of satisfaction and moderating commitment. Innovative Marketing, 20(4), 234-235.
Martínez, M. D. C. V., Martín-Cervantes, P. A., & del Mar Miralles-Quirós, M. (2022). Sustainable development and the limits of gender policies on corporate boards in Europe. A comparative analysis between developed and emerging markets. European Research on Management and Business Economics, 28(1), 100-168.
Matosas-López, L. (2024). Proposal of a structural model to analyze the impact of brand trust on consumer adoption and behavior with chatbots. In Trends, challenges, and practices in contemporary strategic management (pp. 236-253). New York: IGI Global Scientific Publishing.
Metz, D., Ilieș, L., & Nistor, R. L. (2020). The impact of organizational culture on customer service effectiveness from a sustainability perspective. Sustainability, 12(15), 6240-6245.
Mikkilä, M., & Toppinen, A. (2008). Corporate responsibility reporting by large pulp and paper companies. Forest policy and economics, 10(7-8), 500-506.
Morgan, R. M., & Hunt, S. D. (1994). The commitment-trust theory of relationship marketing. Journal of marketing, 58(3), 20-38.
Novrianda, H., & Shar, A. (2023). Membangun loyalitas pelanggan melalui kualitas layanan dan costumer satisfaction (studi pada nasabah pegadaian syariah di Kota Bengkulu). Fidusia: Jurnal Keuangan Dan Perbankan, 6(2) 22-27.
Parasuraman, A. B. L. L., Zeithaml, V. A., & Berry, L. (1988). SERVQUAL: A multiple-item scale for measuring consumer perceptions of service quality. 1988, 64(1), 12-40.
Park, K., & Wallace, F. (2022). Multicultural leaders from emerging markets: transforming international acquisitions and corporate social responsibility. International Journal of Emerging Markets, 17(5), 1336-1370.
Pranata, S. (2025). Analisis kredit CV. Usada Makmur Perkasa Mandiri untuk meningkatkan pendapatan angota koperasi. Jurnal Akuntansi, Manajemen dan Ilmu Ekonomi (Jasmien), 5(2), 1-11.
Pranata, S. P. (2021). Pengaruh kepemimpinan, lingkungan kerja dan kompensasi terhadap motivasi kerja pada PT. Mahkota Group Tbk Medan. Maneggio: Jurnal Ilmiah Magister Manajemen, 4(2), 275-283.
Pranata, S. P. (2022). The influence of lecturer competence, lecturer creativity, and utilization of E-Learning Media (E-MTU) on student understanding at Universitas Mahkota Tricom Unggul during the Covid-19 Pandemic. Enrichment: Journal of Management, 12(2), 2285-2292.
Pranata, S. P. (2024). Examining the profits and losses of medan city roadside ditch scraping by the medan city government on msmes. J. Bus. Manag. Econ. Dev, 2(02), 919-927.
Pranata, S. P., & Sinaga, A. (2023). Analysis of brand awareness and brand image strategies on lake toba tourists’ interest through the f1h20 power boat digital marketing strategy in Balige, North Tapanuli. Journal of Business Management and Economic Development, 1(2), 240-249.
Pranata, S. P., Mahkota, U., & Unggul, T. (2024). From clicks to trust: Insights into customer brand relationships on TikTok. Formosa Journal of Marketing Research, 3(11), 4043-4058.
Puzzo, G., & Prati, G. (2024). Psychological correlates of e-waste recycling intentions and behaviors: A meta-analysis. Resources, Conservation and Recycling, 204(2), 10-22.
Rahayu, S. (2024). Digital marketing strategies to build customer loyalty: a systematic review of sustainable financial benefits. Atestasi: Jurnal Ilmiah Akuntansi, 7(1), 792-806.
Rusavska, V., Peresichna, S., Zavadynska, O., Oliinyk, O., Neilenko, S., & Bratitsel, M. (2024). Digital transformation in the hotel and restaurant business: the impact of technologies on hospitality management and services. Economic Affairs (New Delhi), 69(1), 297-305.
Sacchi, G., Belletti, G., Biancalani, M., Lombardi, G., & Stefani, G. (2019). The valorisation of wheat production through locally-based bread chains: Experiences from Tuscany. Journal of Rural Studies, 71(2), 23-35.
Sathapanickaboot, T., & Ueasangkomsate, P. (2023). How does green human resource management influence employee engagement through the sustainable organization of air courier services providers? 2023 IEEE International Conference on Technology Management, Operations and Decisions, ICTMOD 2023. Rabat: Institute of Electrical and Electronics Engineers Inc.
Streimikiene, D., & Siksnelyte, I. (2016). Sustainability assessment of electricity market models in selected developed world countries. Renewable and Sustainable Energy Reviews, 57(1), 72-82.
Takhim, M., Sonjaya, A., Salim, Z., Rahman, A., Basmar, E., Abdullah, R., & Ali, M. (2023). The synergy of islamic banks and muslim-friendly tourism: patterns of halal industry development in Indonesia. International Journal of Sustainable Development and Planning, 18(9), 2723-2731.
Thorpe, J., & Prakash-Mani, K. (2006). Developing value. Managing the business case for sustainability: the integration of social, environmental and economic performance. Sheffield: Greenleaf Publishing
Vijayan, R. V., Krishnan, M. M., Parayitam, S., Duraisami, S. P. A., & Saravanaselvan, N. R. (2023). Exploring e-waste recycling behaviour intention among the households: Evidence from India. Cleaner Materials, 7(10), 100-174.
Wu, Q., Yan, D., & Umair, M. (2023). Assessing the role of competitive intelligence and practices of dynamic capabilities in business accommodation of SMEs. Economic Analysis and Policy, 77(2), 1103-1114.
Wulandari, D. (2022). Customer satisfaction as a priority in excellent banking services. KINERJA: Jurnal Manajemen Organisasi dan Industri, 1(1), 27-34.
Yamaji, D. M., Amâncio-Vieira, S. F., Fidelis, R., & Contani, E. A. D. R. (2024). Proposal of multicriteria decision-making models for biogas production. Energies, 17(4), 806-808.
Yang, C. Y., & Yang, C. H. (2019). The impact of sustainable environmental management in the food and beverage industry on customer loyalty: A View of Brand Attitude. Ekoloji Dergisi, 107(2), 22-25
Yum, K., & Kim, J. (2024). The influence of perceived value, customer satisfaction, and trust on loyalty in entertainment platforms. Applied Sciences, 14(13), 57-63.
Zaki, M. (2019). Digital transformation: harnessing digital technologies for the next generation of services. Journal of Services Marketing, 33(4), 429-435.
