Waterfall VS Agile Software Development Methodologies

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Differences Between Waterfall Vs Agile
Methodologies

• By Imran Ansari

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• Todays software development utilizes many
  methodologies to facilitate building applications
  and software solutions. we've Waterfall, Agile,
  Design Thinking, or Lean Startup also as their
  combinations and variations. What are the
  principles of those methodologies? How do they
  support software development? Lets explore the
  differences between the Waterfall methodology and
  a combined approach that has Design Thinking,
  Lean Startup, and Agile.

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• Waterfall
• The Waterfall approach to software development
  describes a sequential process for building
  softwarei.e., one step has got to be completed
  before subsequent can begin.
• In the Waterfall methodology, the project scope,
  outcome, and requirements are documented fully
  before any development begins.

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• Waterfall Project structure Phases
• Design Agree on a programming language, specific
  design elements, system design. Documents
  produced during this phase are going to be the
  framework for the implementation (coding) phase.
• Implementation Turn client requirements and
  style documents into the software.
• Testing Test the software for bugs and check if
  the goals from the wants document are met.
• Deployment Release the software to the client.
• Maintenance Fix any problems found once the
  software has been released to the purchasers.

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• Benefits
• Better manageability. Because each step is
  documented and deliverables outlined upfront,
  its easier to manage the project.
• Fixed price and deadline. The value and delivery
  date are often determined with a high degree of
  accuracy.
• Clear instructions. Developers and designers
  involved in the project know exactly what to try
  and when to try to do it. With detailed
  documentation available, the project is often
  completed by different teams.

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• Drawbacks
• Once the event begins, its difficult to adapt
  the project to any changes in requirements or new
  market insights. Whenever significant changes are
  needed, the project has got to undergo the need
  and style phases.
• Requirements dont always reflect real user
  needs.
• Projects counting on technologies that have
  frequent release-cycles got to be updated often
  to reflect the changes. As a result, the
  estimations in the documentation are going to be
  less accurate.

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• Agile Software Development
• Agile development describes the process of
  developing software. The Agile methodology was
  created to form software development more
  efficient and versatile compared to the normal
  Waterfall methodology.
• In the Agile approach, the software is built-in
  parts (fully working pieces with a database, user
  interface, business logic). Testing and
  development happen concurrently as against the
  linear approach in Waterfall. The core assumption
  is to release new products faster and introduce
  modifications counting on user feedback.

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• Assumptions of Agile development
• Communication Agile teams discuss daily to align
  on goals and reflect on past tasks to hunt
  improvement.
• Adaptive approach Unexpected changes within the
  project are introduced swiftly, helping gear the
  merchandise toward end-users.
• Collaboration Frequent collaboration with
  customers to seek out areas for improvement
  within the product.
• Priority Deliver a working version of the
  software early and
• Cross-platform developers Teams have all the
  required skills to create software products that
  deliver customer value.

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• Benefits
• Faster time-to-market.
• Quick implementation of the latest project
  requirements.
• High-quality software. Bugs and errors are caught
  early because applications are built iteratively
  and each iteration is tested.
• Increased productivity through stress on
  collaboration and communication.
• Smaller documentation. The main target is on
  building working software.

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• Drawbacks
• Projects can become chaotic if teams and project
  managers arent skilled in Agile development.
• It is often difficult to estimate delivery dates
  because the project can change during
  development.
• In the combined approach, the Agile methodology
  is employed to make a minimum viable product
  (MVP)a fully working version of an application
  with minimum features built to gather insight and
  refine future iterations.

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Thank You