Software development methodologies

Development methodologies are a battle between dogmatism and pragmatism. Dogmatism is people who have a zeal – they say that this way is the way, if you deviate from this way, all is lost. Pragmatism, pulling together what works at the moment.
There are definite benefits to both. The people who are more dogmatic versus pragmatic. produce a better level of insight into the system. because they’re spending a lot of time focusing on their tool and what it can do and how to optimize it. They produce a better raw product. Pragmatists can look at all these raw products and say. I’ll take that bit from there and that bit from there and can be more effective. when it comes to changing requirements and changing projects.

What is a software development methodology?

The software development method is a process or series of processes used in software development. Again, quite broad but that it is things like a design phase, a development phase. It is a way of thinking about things like waterfall being a non-iterative kind of process. Generally, it takes the form of defined phases. It is designed to describe the how of the life cycle of a piece of software.
It is also codified communication. So you’re actually setting a set of norms between a group of people. that says this is how you’re going to work and this is how you’re going to pass information between each of you in certain ways. whether that is documentation, whether that is discussion, whether that is drawings on paper.

Types

Agile Software Development
Scrum Development
FDD: Feature Driven Development
Lean Development
XP: Extreme Programming
Waterfall Model
Prototype Model
RAD: Rapid Application Development
Dynamic Systems Development Model
Spiral Model
JAD: Joint Application Development
Rational Unified Process
DevOps Methodology
Adaptive Software Development
Behavior Driven Development

Agile development method:

Teams use the agile development method to cut the 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 the software to be released in iterations. Iterative releases improve efficiency by allowing teams. to find and fix defects and align expectations 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 need a huge time commitment from users and are labor-intensive. because developers must complete each feature within each iteration for user approval.

Agile development methods are like rapid application development (see below). and can be inefficient in large organizations. Programmers, managers, and organizations accustom 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 a development method. 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. Companies that use DevOps methods benefit by 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 need 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 need 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 change 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, may benefit the most from using the waterfall development method.
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 adjust to shifting requirements in a fast-paced and changing market.” The ability to 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 goal. and a defined user group, but which are not complex. RAD is especially useful for small to medium projects that are time-sensitive.
Cons: Rapid application development requires a stable team composition with skilled developers and users. who are 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 enjoy RAD.

Scrum

Another way to tool the Agile approach. Scrum borrows from Agile’s foundational beliefs and philosophy. that teams and developers should collaborate and daily.
With Scrum, the software developed for using an iterative approach. in which the team is front and center experienced and disciplined workers on smaller teams. might find the most success with this method. as it requires self-organization and self-management.
Team members break down end goals into smaller goals at the beginning. and work through them using fixed-length iterations or sprints to build software. and showcase it often (which usually last two weeks). Meetings play an important role in the Scrum approach. and during each sprint, daily planning meetings, and demos. take place to follow the progress and gather feedback. This incremental method promotes quick changes. and development and adds value to complex projects. Scrum incorporates the structure and discipline of more traditional software development methodologies. with the flexibility and iterative practices of modern Agile.

Extreme Programming (XP)

Another Agile framework, Extreme Programming (or XP) focuses on producing higher quality software. using the best practices in software development. As with most Agile approaches, XP allows for frequent releases in short development sprints. that encourage change when needed.
In general, XP follows a set of values, rather than steps, including simplicity (develop what need, nothing more). communication (teams must collaborate and work together on every piece of the software). consistent feedback; and respect.
Extreme Programing requires developers to first plan and understand the customer’s user stories. their informal descriptions of certain features. Other practices include scheduling and dividing work into iterations. Design with simplicity in mind, code and test often. which helps to create fault-free software. Listen to feedback to best understand the functionality, and then test more.

Lean

Lean is at once a workflow method and a mindset, incorporating principles. and practices from the manufacturing space and applying them. to a variety of industries, including software development. While Agile is an excellent method for the practical application of development best practices. it does not include instructions for scaling these practices across the organization. or applying them outside of development-type work.
This is why many organizations that practice Agile. at the team level begin to incorporate Lean philosophies, practices, and tools to help to innovate at scale. Lean’s basic principles. optimize the whole, end waste, build quality in, create knowledge, defer commitment, deliver fast, and respect people. Can help to guide decision-making across the organization. in a way that can help to unearth potential issues and maintain a healthy organizational culture.
Combining the best of Lean thinking and Agile software development practices. can create a healthy, sustainable culture of innovation. that benefits not only the development organization, but the system as a whole.

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