Future conflict scenarios are predicted to be characterized by cooperation between manned and unmanned systems. The requirements for integration of systems within a single platform are expected to increase to enable new capabilities - for example, new types of protection, weapons, sensor fusion and signature capabilities. Within the project are opportunities and weaknesses analyzed with for example active countermeasures, conformal weapons, internal weapons bay, non-traditional air intakes, hull-integrated sensors and antennas, and vehicle technical systems related to hypersonic weapons. The results are used on a higher system level to model combined capabilites or for threat modeling. The project focuses on solutions and principles that could be relevant for an upgrade of existing combat aircraft systems in the period beyond 2030 but also for new future combat aircraft capabilities. This report summarizes the work within the project "Platform based system collaboration" during the period 2023-2025 and constitutes a delivery within the Swedish Armed Forces' order AT.9221418 Flygsystem FOI 25.