Supply Chain Integration, Project Management, And Operational Excellence In Manufacturing Organizations

Abstract

Manufacturing organizations increasingly pursue operational excellence through the simultaneous deployment 
of supply chain integration and disciplined project management, yet empirical evidence explaining how these two 
capabilities interact remains fragmented. This study examines the mechanism through which supply chain 
integration translates into operational excellence, and tests whether project management capability functions as 
the transmission channel that converts integration into measurable performance. Cross-sectional survey data 
were gathered from 342 manufacturing firms operating in automotive, electrical and electronics, pharmaceutical 
and chemical, machinery, and textile sectors, using a structured instrument administered to operations, supply 
chain, and project executives. Constructs were measured with validated multi-item scales, and the measurement 
model satisfied thresholds for reliability, convergent validity, and discriminant validity, with composite 
reliabilities between 0.842 and 0.913. Hierarchical regression and covariance-based structural equation 
modelling were applied, supported by bootstrapped mediation testing and moderated path analysis. Results show 
that supply chain integration exerts a significant direct effect on operational excellence, and a substantially larger 
total effect once the indirect route through project management capability is accounted for. Project management 
capability partially mediates the relationship, carrying approximately forty-four percent of the total effect, while 
digital and information technology enablement significantly strengthens the conversion of integration into project 
management capability. Firms in the highest integration maturity quartile outperform the lowest quartile across 
cost efficiency, quality conformance, delivery reliability, and process flexibility. The findings clarify that 
integration alone is insufficient; disciplined project execution is the mechanism that operationalises integration 
into durable operational advantage for manufacturing organizations.