Kardiyasa, K.A.P. and Putra, A.A.A.W. 2026. Assessing the Effectiveness of COBIT Implementation in Improving IT Operational Performance in Indonesian Enterprises. Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi). 10, 1 (Jan. 2026), 386–397. DOI:https://doi.org/10.35870/jtik.v10i1.5081.