This white paper explores the evolving landscape of enterprise resource planning (ERP) systems, focusing on the emergence of Rapid Application Development (RAD) as a superior alternative for modernizing software applications in enterprises. RAD is redefined here as an amalgamation of low-code development, source code availability, and transparent DevSecOps processes. The paper compares traditional ERP systems like SAP and Microsoft Dynamics against RAD platforms, highlighting their cost, scalability, customization, and implementation aspects. It includes case studies and industry trends, offering guidance for enterprises in making an informed choice that aligns with their digital transformation goals and operational needs.