This paper aims to identify and analyze the existing literature regarding the combination of Lean six sigma 'LSS' and
Industry 4.0 ‘I4.0’. Based on a descriptive bibliometric analysis, the literature on the Scopus database was scanned
from 2011 to September 2021. The authors identified and analyzed the most relevant articles to explore trends in the
research field and to identify potential gaps, concerns, and perspectives for future research. The fourth industrial
revolution, known as Industry 4.0, represents a new phase for manufacturing industries. The technological advances
offered by industry 4.0 provide a real-time data connection, which leads to greater availability and accessibility of
data. LSS is one of the most widely used operation management concept for optimizing production processes in
manufacturing. The connection between the two concepts LSS and I4.0 marks the beginning of a new era for digital
Lean Six Sigma and process optimization. The analysis shows that few research studies have been conducted on
LSS and I4.0 integration; no studies have examined readiness assessments and framework for the integration of LSS
and I4.0. The result confirms that I4 is growing fast as a research field, which covers a variety of disciplines and
research areas. The study is useful for both academics and professionals because it outlines the major lines of
research in the field.

Keywords
Industry 4.0, Lean manufacturing, Lean Six Sigma, Literature review

DOUNIA SKALLI

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Toward the integration of Lean Six Sigma and Industry 4.0: Current trends and future perspectives-Descriptive Bibliometric Analysis