The modified waterfall model improves upon the original waterfall model by incorporating feedback between phases, allowing some parallel work, and enabling more customer interaction. While the original waterfall model is simple and works for small projects with low risk, it lacks feedback, parallelism, experimentation, and intermediate deliveries. The modified waterfall model is still used for some practical systems like HRMS, inventory management, CRM, and POS retail systems.

3. MODIFIED WATERFALL MODEL
ORIGINAL WAREFALL MODEL

7. BASE MODEL
SIMPLE AND EASY
SMALL PROJECTS
NO FEEDBACK
NO PARAELLISM
HIGH RISK
NO EXPERIMENT
SIMPLE AND EASY
SMALL PROJECTS
BASE MODEL
FEEDBACKS
NO PHASE OVERLAPPING
REGID
LESS CUSTOMER INTERACTIONS
NO INTERMEDIATE DELIVERY

8. Earlier this model was very popular but nowadays it is not used
still, there are some practical applications of this model
HUMAN RESOURCE MANAGEMENT
SYSTEMS (HRMS)
INVENTORY MANAGEMENT SYSTEMS
CUSTOMER RELATIONSHIP
MANAGEMENT (CRM) SYSTEMS
POINT OF SALES (POS) SYSTEMS FOR
RETAIL CHAINS
and many more........