Hidayat Abdullah, E. 2024. THE ROLE OF ECONOMIC EFFICIENCY AND BUSINESS STRATEGY TO ACHIEVE COMPETITIVE ADVANTAGE: Received: 25th September 2023; Revised: 09th October 2023, 02nd November 2023; Accepted: 30th November 2023. PEOPLE: International Journal of Social Sciences. 10, 1 (Mar. 2024), 27–41. DOI:https://doi.org/10.20319/pijss.2024.101.2741.