An Agile methodology is a practice that promotes continuous iteration of development and testing throughout the software development lifecycle. Unlike in Waterfall, where both activities are done after one another, this model has them happening at about the same time, so each can influence or affect what happens with each activity.
What is Agile Software Development?
Agile development is the name of a simple and effective process to turn ideas for business needs into actual software. This term describes how we can plan, learn as we go along, improve what doesn’t work well enough yet, collaborate with team members who all understand our goals together; it encourages us to change flexibly when needed too! It’s such an easy concept that everyone should know about by now.
Agile software development emphasizes four core values.
- In-person and team interactions over tools and processes
- Customer collaboration over contract negotiation
- Working software over comprehensive documentation
- Responding to change over following a plan
Agile Model Vs. Waterfall Model
Many software development processes exist. Agile and Waterfall are two of them, each with its own advantages depending on the type of project being worked on.
| Agile Model | Waterfall Model |
| Agile methodologies propose an iterative and incremental approach to software design. | In the waterfall model, the development of software flows from start point to endpoint. |
| The Agile process is broken into separate models that designers work on | The design process is not broken into individuals and separate models |
| Customers are given ample opportunities to see the product early and make decisions about their needs before they spend money. | The product is created having the customer in mind, but they cannot see it until after everything has been done. |
| The agile model is considered to be less structured when compared with the waterfall model. | Waterfall models are more secure because they plan so far ahead. |
| For small projects, development can be implemented very quickly. However, for large-scale initiatives, it is difficult to estimate the time required for their completion | Many types of projects can be estimated and completed. |
| When you notice an error in the middle of your project, it’s okay to fix them without starting over. | At the end of this process, a final test is given to check for any errors. If changes need to be made or if an error was found in the requirements, then you have to start from scratch |
| When the development process is iterative, it allows short iterations to plan out small aspects of the project. | The development process is broken into many phases, each of which has a detailed description for the next phase. |
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