The Waterfall model is a sequential software development process where each phase must be completed before the next can begin, including design, implementation, testing, and deployment. The Agile methodology was created to make software development more efficient by building software iteratively in parts with testing and development occurring concurrently rather than linearly. Both approaches have benefits like clear structure or faster time-to-market, and drawbacks like difficulty changing requirements or projects becoming chaotic without skilled teams.

2. Waterfall
The Waterfall approach to software development describes a sequential
process for building software—i.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.

3. 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.

4. Benefits of Waterfall
● Uses clear structure
● Determines the end goal early
● Transfers information well

5. Drawbacks of Waterfall
● Makes changes difficult
● Excludes the client and/or end user
● Delays testing until after completion of Development

6. 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.

7. 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.

8. Benefits of Agile
● Better manageability. Because each step is documented and deliverables
outlined upfront, it's 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.

9. 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.

10. Drawbacks of Agile
● Once the event begins, it’s 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 don’t 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.

11. Drawbacks
● Projects can become chaotic if teams and project managers aren't 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.