The object of the act concerns the provision of services for the scientific and technical support of the Municipality of Serres in the context of the update of the Strategy for Integrated Spatial Investments for Sustainable Urban Development OPEA of the Municipality of Serres in the context of the Operational Programme of Central Macedonia 2021 2027. The Contractor will update the Strategy to meet the requirements of the new Planning and in particular those referred to in document No 12414321122022 of the Special Service for Strategic Planning Evaluation of the Ministry of Development and Investments on Guidance for the selection and design of strategies under OPEAA and CLLD for the programming period 2021 2027.