Design and development methodologies have been the primary focus of research on integrated software and hardware systems. The study's intended outcome was a unified framework. Finding a way to organise development efforts while taking software capacity and hardware limits into account was one of the main goals of the project. This was crucial since there has been a noticeable uptick in the number of projects trying to bridge the gap between a system's digital logic and its physical components. A thorough examination of co-design methodologies revealed the significant influence that early-stage collaboration between the software and hardware teams had on the system's efficiency, scalability, performance, and performance. The purpose of this evaluation was to demonstrate the substantial impact that this collaboration achieved. Iterative prototyping, hardware/software co-simulation, and model-based design are some of the effective strategies that may allow parallel development and simultaneously minimise integration risks that are being investigated in this study. Those were the methods that were being considered since they were feasible and somewhat efficient. Tools and platforms for development like as hardware description languages (HDLs), real-time operating systems (RTOS), and FPGA prototype environments were studied for their potential to expedite development and improve system validation. It was found that these platforms and technologies significantly aided development. Embedded systems, automotive control units, and Internet of Things applications were evaluated as real-world case studies to demonstrate the practical benefits of integrated development methodologies. The goal in doing so was to demonstrate the potential usefulness of development plans.