Web development uses different project management methodologies. Notably, agile and waterfall people compare the most.
In this article, we will discover a comparison of agile and waterfall, and their positive and negative aspects in detail.
Waterfall approach vs agile: what is in demand now?
Software development lifecycle (SDLC) is a single process that differs in the two most sought-after project management approaches. It’s about agile and waterfall.
As Statista’s data shows, 32% of respondents prefer the agile method in software development compared to 10%, who apply the waterfall approach.
What is the Agile methodology?
As the State of Agile Report demonstrates, 95% of the interviewed firms practice agile.
Agile project management is a web development approach that concentrates on flexible stages to achieve the aim. So, a team can make modifications and changes swiftly.
How does the agile model work?
The agile approach enables moving on a project in small steps. For example, in the Scrum approach they are called sprints. These are short periods of around a couple of weeks.
At the start of each sprint, a web development team defines the deliverables list. At the end of the sprint, the client and the team discuss the results and make notes for subsequent sprints.
Below is the framework with sprints demonstrated by Scrum.
Pros of the agile approach
The agile methodology has such advantages:
- Moving in small steps with iteration
- Agile approach means taking small steps.
Agile teams are flexible, so, if needed, the project direction can be altered.
- Opportunity of continuous improvements
Communication in agile between the team and the client brings better end results.
- Regular communication with client
It helps to understand client’s requirements and simplify the development process.
- Fast implementation of changes
If changes are required, the team quickly makes them.
- Quick product delivery
The product with minimum features can be delivered to the market and gather user feedback.
Cons of the agile approach
- Higher customer involvement
Sometimes clients prefer to rely on the team.
- Robust change management needed
Due to changes of priorities in agile, some features will not be developed within the allotted time. Therefore, you may need reliable change management.
- Frequent redesigning
The agile development system will require redesigning to maintain its high quality.
- Team location in one place can be impossible
In agile, it is good for the team to be in the same place.
- Self-management required.
The team should be fully dedicated to the project development.
Best tools for agile development
Project managers and developers use the Jira tool to accomplish and plan tasks.
Trello enables users to write comments, attach documents, make checklists, and more.
This tool comprises different features for task management, time-tracking, and more.
This solution enables team members to make plans and plot process stages.
What types of projects does the agile approach suit?
The agile approach is best for projects where the features set is flexible, and projects with non-fixed budgeting.
Example of projects developed with agile
What is the Waterfall methodology?
The first description of the waterfall approach was made in 1970 by Winston W. Royce, who presented a detailed diagram. This diagram shows the core of this approach.
Each of the waterfall methodology phases starts after the previous stage is completed. And each stage should be approved before moving to the next. This is the main difference between waterfall and agile.
Also, the waterfall approach means that all the requirements are discussed at the start, unlike agile.
Pros of the waterfall approach
- Straightforward planning
The client and the team agree on the requirements at the start of the development.
- Defined scope
The full scope is represented at the start of development.
- Defined duration
The waterfall approach simplifies defining the time for project delivery.
- Consistent software design
The waterfall approach eliminates the need to correct the design.
- Easier costs evaluation
The waterfall allows estimating costs at once.
- Clear measurements of progress
Each completed phase means successful progress in product development.
- Designated team roles
The waterfall approach allows clarity in distinguishing the roles.
- The team members can handle other tasks
Throughout the development process, the team can handle different tasks.
- A client is less involved
The client is involved at the start and at the end of development.
Cons of the waterfall approach
- Rigid structure of the project
The waterfall approach doesn’t enable plan modifications.
- Later testing
The waterfall approach allows testing in the later development phase.
- Difficulties with the delivery of big development projects
There may be discrepancies between the needs and results.
- Limited customer involvement
It may lead to low customer satisfaction.
- Clients find it difficult to understand the whole project
Sometimes a client fails to understand some details.
Best tools for waterfall development
It allows tracking the task progress.
With it, you can create plans and track the progress of projects.
It is an online tool for tracking your tasks’ progress and checking the deadlines.
- Zoho Projects
This tool offers features, such as Gantt charts and billing recording on many projects at once.
Types of projects that the waterfall method suits
It is best to select the waterfall approach for a small-size single project with the defined budget and scope and when a client prefers predictable project management.
For instance, the waterfall is suitable for such domains as:
Agile and waterfall: comparison
Below you can see an infographic showing how the development process is organized in both methods.
How to select between agile vs waterfall?
Use the agile method if
- Your requirements are flexible;
- The scope of the project and features can be сhanged;
- You want to be involved in the development process.
Use the waterfall method if
- Your requirements are not changeable;
- The scope of the project is clearly defined and shouldn’t be changed;
- You choose to rely on the development team.
Now, you have an idea of the agile and waterfall's positive and negative aspects, you can make the smart choice.