Write a Report Researching into the Relevant Technologies, Software Tools, IDEs, Programming Methodologies & Development Methodologies
How do the top software development
methodologies (waterfall, rapid application, agile, and DevOps) work? And which
method is best for your project?
Successful projects are managed
well. To manage a project efficiently, the manager or development team must
choose the software development methodology that will work best for the project
at hand. All methodologies have different strengths and weaknesses and exist
for different reasons. Here’s an overview of the most commonly used software
development methodologies and why different methodologies exist.
Agile development
methodology
Teams use the agile development
methodology to minimize risk (such as bugs, cost overruns, and changing
requirements) when adding new functionality. In all agile methods, teams
develop the software in iterations that contain mini-increments of the new
functionality. There are many different forms of the agile development method,
including scrum, crystal, extreme programming (XP), and feature-driven
development (FDD).
Pros: The primary benefit of
agile software development is that it allows software to be released in
iterations. Iterative releases improve efficiency by allowing teams to find and
fix defects and align expectation early on. They also allow users to realize
software benefits earlier, with frequent incremental improvements.
Cons: Agile development
methods rely on real-time communication, so new users often lack the
documentation they need to get up to speed. They require a huge time commitment
from users and are labor intensive because developers must fully complete each
feature within each iteration for user approval.
Agile development methods are
similar to rapid application development (see below) and can be inefficient in
large organizations. Programmers, managers, and organizations accustomed to the
waterfall method (see below) may have difficulty adjusting to an agile SDLC. So
a hybrid approach often works well for them.
DevOps deployment methodology
DevOps is not just a development
methodology but also a set of practices that supports an organizational
culture. DevOps deployment centers on organizational change that enhances
collaboration between the departments responsible for different segments of the
development life cycle, such as development, quality assurance, and operations.
Pros: DevOps is focused on
improving time to market, lowering the failure rate of new releases, shortening
the lead time between fixes, and minimizing disruption while maximizing
reliability. To achieve this, DevOps organizations aim to automate continuous
deployment to ensure everything happens smoothly and reliably. Companies that
use DevOps methods benefit by significantly reducing time to market and
improving customer satisfaction, product quality, and employee productivity and
efficiency.
Cons: Even in light of its
benefits, there are a few drawbacks to DevOps:
·
Some customers don’t want continuous updates to
their systems.
·
Some industries have regulations that require
extensive testing before a project can move to the operations phase.
·
If different departments use different
environments, undetected issues can slip into production.
· Some quality attributes require human interaction, which slows down the delivery pipeline.
Waterfall development method
Many consider the waterfall method
to be the most traditional software development method. The waterfall method is
a rigid linear model that consists of sequential phases (requirements, design,
implementation, verification, maintenance) focusing on distinct goals. Each
phase must be 100% complete before the next phase can start. There’s usually no
process for going back to modify the project or direction.
Pros: The linear nature of
the waterfall development method makes it easy to understand and manage.
Projects with clear objectives and stable requirements can best use the
waterfall method. Less experienced project managers and project teams, as well
as teams whose composition changes frequently, may benefit the most from using
the waterfall development methodology.
Cons: The waterfall
development method is often slow and costly due to its rigid structure and
tight controls. These drawbacks can lead waterfall method users to explore
other software development methodologies.
Rapid application development
Rapid application development (RAD)
is a condensed development process that produces a high-quality system with low
investment costs. Scott Stiner, CEO and president of UM Technologies, said in
Forbes, “This RAD process allows our developers to quickly adjust to shifting
requirements in a fast-paced and constantly changing market.” The ability to
quickly adjust is what allows such a low investment cost.
The rapid application development
method contains four phases: requirements planning, user design, construction,
and cutover. The user design and construction phases repeat until the user
confirms that the product meets all requirements.
Pros: Rapid application
development is most effective for projects with a well-defined business
objective and a clearly defined user group, but which are not computationally
complex. RAD is especially useful for small to medium projects that are time
sensitive.
Cons: Rapid application
development requires a stable team composition with highly skilled developers
and users who are deeply knowledgeable about the application area. Deep
knowledge is essential in a condensed development timeline that requires
approval after each construction phase. Organizations that don’t meet these
requirements are unlikely to benefit from RAD.
Which software development methodology should I
use?
These four software development
methodologies are the most pervasive in software development. Each one has its
own strengths and weaknesses and works effectively in different situations.
When choosing your development methodology, think about combining the elements
of each method that work best for your team and your current project. In this
way, you can create a hybrid development methodology that’ll get you to
production securely and efficiently.