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	Skala Jakości Usług Elektronicznych E-S-QUAL	Skala Jakości Usług SERVQUAL
Dziedzina	Zarządzanie marketingiem	Zarządzanie marketingiem
Rodzina	Process / pipeline	Process / pipeline
Rok powstania	2005	1988
Twórca	A. Parasuraman, Valerie A. Zeithaml, Anantharanthan Malhotra	A. Parasuraman, Valerie A. Zeithaml, Leonard L. Berry
Typ	Multi-dimensional electronic service quality scale	Multi-dimensional service quality scale
Źródło pierwotne	Parasuraman, A., Zeithaml, V. A., & Malhotra, A. (2005). E-S-QUAL: A Multiple-Item Scale for Assessing Electronic Service Quality. Journal of Service Research, 7(3), 213-233.	Parasuraman, A., Zeithaml, V. A., & Berry, L. L. (1988). SERVQUAL: A Multiple-Item Scale for Measuring Consumer Perceptions of Service Quality. Journal of Retailing, 64(1), 12-40.
Inne nazwy	E-S-QUAL, Online Service Quality Scale	Service Quality Instrument, Gap Model
Pokrewne	3	4
Podsumowanie	E-S-QUAL is a 22-item scale developed by Parasuraman, Zeithaml, and Malhotra (2005) to measure service quality in electronic commerce and digital service environments. Adapting the foundational SERVQUAL dimensions to online contexts, E-S-QUAL assesses four core dimensions: Efficiency (ability to complete transactions quickly), Fulfillment (accurate order fulfillment and on-time delivery), System Availability (website uptime and technical performance), and Privacy (security of customer data and transactions). The scale captures both service delivery (how the website functions) and service recovery (how problems are handled).	SERVQUAL is a 22-item, multi-dimensional scale developed by Parasuraman, Zeithaml, and Berry in 1988 to measure consumer perceptions of service quality. It captures the gap between customer expectations and actual service performance across five core dimensions: Tangibles, Reliability, Responsiveness, Assurance, and Empathy. The instrument has become the most widely used tool for service quality assessment in marketing research and practice.