Zahidah, N. 2025. Optimizing Certification Submission through an Integrated Information System with DMAIC Framework. JEMSI (Jurnal Ekonomi, Manajemen, dan Akuntansi). 11, 4 (Aug. 2025), 2408–2429. DOI:https://doi.org/10.35870/jemsi.v11i4.4381.