TY - JOUR T1 - A Decision Support System (Dss-M) for Municipal Budget and Investment Program Planning Processes in Türkiye AU - Özgül, Hüseyin Burak AU - Susam, Nazan PY - 2025 DA - February Y2 - 2024 DO - 10.26650/JEPR1590874 JF - İktisat Politikası Araştırmaları Dergisi JO - JEPR PB - Istanbul University WT - DergiPark SN - 2148-3876 SP - 154 EP - 179 VL - 12 IS - 1 LA - en AB - Decision Support Systems (DSS) have been used in a wide range of sectors since their initial development in the 1970s. Recently, however, there has been a notable shift in their utilisation, with an increasing number of DSS being deployed in the planning of public resources. This development coincides with the advent of digital transformation in the public sector. Decision support systems facilitate more effective decision-making processes by processing data obtained with the assistance of information systems. In Turkiye, these systems were identified as a crucial instrument for local governments in the National Smart Cities Strategy and Action Plan, developed by the Ministry of Environment, Urbanisation and Climate Change in 2019. The objective is to extend their implementation. Considering these circumstances, it is imperative to devise a model for the implementation of the system across all municipalities in Turkiye. This model must consider the manner in which decision support systems are utilised, their advantages and limitations within municipalities, which are the local government units where the principle of subsidiarity. The study employed a qualitative research methodology. The study group was constituted using a nested multiple-case design and comprised 18 participants selected from various units of metropolitan and sub-provincial municipalities in Istanbul. Elite interviews were conducted with the participants, and the data obtained were analysed with the MAXQDA program. 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