22nd August 2021
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Software Development Methodologies Practiced Worldwide 2021

Przemyslaw Potoczny

Przemysław Potoczny

Software Development Methodologies - graphic
4 minutes read
Contents
  • What is Software Development Methodology?
  • Agile development methodology
  • DevOps deployment methodology
  • Waterfall methodology
  • Rapid application development (RAD)
  • Which software development methodology is best?

A successful project is one that is well-managed. To ensure that a project is managed efficiently, the development team or manager must select the best software development methodology that will provide smooth development for the project. These development methodologies are simply product organization methods for the software development process.

What is Software Development Methodology?

This is a process framework guiding a team of software engineers. These software engineering process models are followed when developing applications that satisfy changing timelines, user stories, and requirements to reduce the failure rate. It is a combination of rules, roles, and best practices to follow when developing and creating applications.

The software development model does not involve the application of any technical elements. However, it entails making careful plans for the software development lifecycle (SDLC). All the different development methodologies have various strengths and weaknesses and they work differently in diverse situations.

Below is an overview including the pros and cons of the best-practiced software development methodologies in 2021.

Agile development methodology

This model is used by various teams to reduce risks such as cost overruns, changing requirements, and bugs when creating new functionality. In this method, the software is developed in iterations such that they contain small increments of the newly added functionality. The agile development method exists in different forms, including extreme programming (XP), crystal, feature-driven development (FDD), and scrum.

Benefits of agile methodology

Agile software development models allow the release of software in iterations. The efficiency of iterative releases is improved by ensuring that defects and found and fixed and expectations are aligned early on. The frequent incremental improvements allow users to early understand the software benefits.

Disadvantages of agile methodology

Agile methods rely on communication done in real-time. Oftentimes, new users lack the necessary documentation needed to get up to speed. They demand a massive time commitment from users. For user approval, developers must complete every feature within every iteration in full. This makes these models labor-intensive.

DevOps deployment methodology

DevOps is more than just a development method; it is also a set of practices that supports the culture of an organization. This method focuses solely on changes that improve teamwork among various departments accountable for the various stages of the software development life cycle in an organization. The stages include quality assurance, development, and operations.

Benefits of DevOps deployment

This method focuses on reducing the rate of failure of new releases, improving the time needed to market, lessening disruption while increasing reliability, and reducing the lead period between fixes. To accomplish this, DevOps organizations make use of an automated continuous deployment to make sure that everything works smoothly and reliably. Overall, DevOps methods help reduce time to market, thus improving product quality, productivity and efficiency of the employee, and customer satisfaction.

Cons of DevOps deployment

Despite its benefits, DevOps have a few limitations:

  • some end-users do not appreciate continuous systems updates,
  • if different environments are used by different departments, unnoticed issues can enter into production,
  • some organizations have procedures that demand that extensive testing must be done on a project before it can move to the operations stage,
  • sometimes human interaction may be required by some quality attributes. This reduces the delivery pipeline pace.

Waterfall methodology

This software engineering methodology is considered the most rigid. It is seen by many as the most traditional method. This development method is a rigid linear model. It comprises sequential phases that focus on distinct goals. These phases include requirements, design, implementation, verification, and maintenance. Before the next phase can commence, each phase must be fully completed. There is usually no room to go back and adjust the project or direction.

Advantages of waterfall methodology

This rigid linear model is easy to comprehend and manage. The waterfall method is best for projects having clear objectives and fixed requirements. Project managers and teams with less experience, and teams with frequently changing composition may enjoy using this development methodology the most.

Disadvantages of waterfall methodology

Oftentimes, this model is slow and expensive because of its tight controls and rigid structure. These limitations can make its users consider alternative software development methodologies.

Rapid application development (RAD)

Rapid development definition shortly is a software development process model that brings about a top-quality system at low investment costs. The RAD process makes it possible for developers to adjust quickly to changing requirements in a constantly changing and face-paced market. Being able to quickly adjust to changes gives room to such a low investment cost. The RAD model comprises four stages of software development namely: requirements planning, user design, rapid construction, and cutover. The user design and rapid construction stages continue to repeat until the user affirms that all the product’s requirements are met.

Pros

RAD is perfect for projects having clearly defined business objectives with a well-defined user group that is not complex computationally. It is effective for time-sensitive small and medium projects.

Cons

RAD requires that team composition be stable, having highly skilled users and developers with deep knowledge of the application area. Approval is needed after each rapid construction stage. This makes it essential to have deep knowledge in a reduced development timeline. Organizations that can’t satisfy these conditions are not likely to find RAD beneficial.

Which software development methodology is best?

These five software development methodologies are 2021 most practiced worldwide. Each one has its strong points and weaknesses in different situations. When deciding, consider merging the elements of each methodology that work best for your current project and the team. With this, you can fashion a hybrid software development modeling that will produce the right results.

Read other topic related to software development processes:

Continuous Integration

Iteration Goal

Code Review

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