Legacy software is software that served a purpose but no longer meets the business objectives. Some common factors that influence the decision to replace a lega

Legacy software is software that served a purpose but no longer meets the business objectives. Some common factors that influence the decision to replace a legacy system with a new one include: maintenance cost, scalability, flexibility. The usual approach in startups is to build something at minimal cost, then replace it later if the business requires it. Everyone has a different opinion regarding the importance of these factors at various stages of software life.