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Another
important difference between Agile software development
methods and waterfall is the approach to quality and testing. In the waterfall
model, there is always a separate testing phase after a build phase; however, in Agile
software development testing is completed in the same iteration as programming.

Here can be included some pro and cons about
those processes. Agile’s flexibility can
also easily leave the door open to procrastination. Since tasks are often being
prioritized and generated with every iteration, the overall timeline can seem
to stretch into infinity while Waterfall’s static nature and predictable
workflow make it easy to estimate costs, create timelines, and stick to deadlines.

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On the other hand Waterfall
has slow delivery time. As many as four phases of development need to be
completed before any coding begins—which means stakeholders and customers won’t
see a working product until late in the life cycle, but Agile systems whit a
solid foundation leads to quicker, higher-quality releases with successive
iterations

The main pro argument which
stands for Agile system is that it place an emphasis on frequent communication
and face-to-face interactions. Teams work together, benefit from pair
programming, and interface daily with business development while in waterfall
predictable timelines and well-documented projects make it easy to give status
updates to upper management, stakeholders, or clients with strict requirements,
but it can be very risky as customers and stakeholders often don’t know what
they really want until they’ve had a chance to play with a working prototype.

 However, there are some similarities between
those two processes. Both rely strongly on a collaborative team environment
with specific responsibilities, roles and accountability. As can be seen from
those two imagines both processes are risk and increment driven in a spiral
philosophy, with iterative planning and execution cycles. Both rely on
differing levels of performance measurement, data that are also used to support
effort estimation. And, both put emphasis on technical matters and on
test-first.

 

This report shows what ‘Plan-driven’ and ‘Agile’ process
stands for, also it shows how those processes are different and how they are
similar, but it is very important to keep in mind that plan- driven and Agile
are just methodologies and there are not wrong or right processes, that’s why most practical processes include elements of both Plan-driven
and Agile approaches.S1 

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