This paper focuses on the importance of software reuse and metrics in software engineering. Software reuse is the process of reusing parts or all of an existing software system, architecture, or methodology to develop new software, potentially with different functionality. Software reuse metrics involve the different methods of ensuring that the reuse components are of the right quality, and reuse metrics serve to expose and predict the defects in the reusable process. In this paper, we introduced the concept of software reuse while exploring its merits and demerits, the types, and the impact of software reuse. From a survey outlook, we observed that high cost incurred whilst troubleshooting a reuse component and the difficulty integrating ...