# Initial product delivery is faster and costs less.

Disadvantages

# The resulting cost may exceed the cost of the organization.
# As additional functionality is added to the product, problems may arise related to system architecture which were not evident in earlier prototypes

Tasks involved

These tasks are common to all the models:
# Communication: helps to understand the objective.
# Planning: required as many people (software teams) to work on the same project but with different functions

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