Singgih, M. et al. 2026. Modular Restful Backend Architecture For Centralized Halal Tourism Administration: A Scrum‑Based Implementation. IDEALIS : InDonEsiA journaL Information System. 9, 1 (Jan. 2026), 90–102. DOI:https://doi.org/10.36080/idealis.v9i1.3565.