Accurate information that is promptly made available is crucial to every step in a modern organization if it is to survive in the cutthroat market of today. Real-time information about demand and supply for materials, machine production lines, stock (regionally, locally, or facility-wise), respective up-to-date ledgers, stock allocations, quick, informed decisions about whether to manufacture goods internally or externally, accurate invoices, AP, AR, etc.; or Historical information about country-, region-, sector-, customer-, and product-level information based on historical data. In fact, this information has grown to such a large extent that a Software System had to be implemented to capture and retrieve information in a timely manner. Since no decision can be made without information nowadays, information systems are the lifeblood of organizations. As a result, businesses prefer ERP to obtain a edge over rivals and provide on-time service to customers. Total 5 companies in Mumbai in the field of Healthcare, manufacturing, small enterprises, e-commerce and non-profit organizations, were identified. The data was collected to portray information in a logical fashion, using both quantitative and qualitative methods. It will givea clear picture of Pre and Post ERP implementation challenges and benefits. [ABSTRACT FROM AUTHOR]