Service Quality in Omnichannel holds a different perspective from conventional service quality, two aspects online and offline become a special consideration in measuring the performance of omnichannel service quality. This study aims to determine the dimensions of omnichannel service quality in various academic literatures that have been published previously. To do so, a systematic review of the service quality omnichannel literature is conducted. Following previously established inclusion and exclusion criteria for selection a total of 17 journal articles publish in the period 1995 to 2021 are analysed. Nine definitions of service quality omnichannel are found in the literature, and a unified definition of the construct is advanced. The dimensions of service quality omnichannel are analysed, and the main differences of the construct with other concepts are also clarified.
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