Overview of SDLC Methodologies in Software Testing

The Software Development Life Cycle (SDLC) provides a systematic process for building and delivering software applications from inception to completion. Different SDLC methodologies exist that can be used to deliver projects and in this post, we will give an overview of common SDLC models and their advantages and disadvantages.

Software Testing Challenges in the Iterative Models

Iterative / Incremental life cycle models, as the name suggests, focus on developing software in increments or chunks. Popular iterative models include the Agile methodologies such as Scrum, XP, etc. A common thread amongst the iterative models is that integrated and working systems are produced and delivered at the end of each iteration. Business functionality …

Iterative Model

An iterative life cycle model does not attempt to start with a full specification of requirements. Instead, development begins by specifying and implementing just part of the software, which can then be reviewed in order to

Incremental Model

The incremental build model is a method of software development where the model is designed, implemented and tested incrementally (a little more is added each time) until the product is finished. It involves both development

Rapid Application Development (RAD)

RAD is, in essence, the “try before you buy” approach to software development. The theory is that end users can produce better feedback when examining a live system, as opposed to working strictly with documentation

Spiral Model

The spiral model starts with an initial pass through a standard waterfall lifecycle, using a subset of the total requirements to develop a robust prototype. After an evaluation period, the cycle is initiated again, adding


The software development team, to clarify requirements and/or design elements, may generate mockups and prototypes of screens, reports, and processes. Although some of the prototypes may appear to be very substantial, they’re generally similar to

V Model

The V Model is an enhanced version of the classic waterfall model whereby each level of the development life cycle is verified before moving on to the next level. With this model, testing explicitly starts at

Waterfall Model in Software Testing

Once upon a time, software development consisted of a programmer writing code to solve a problem or automate a procedure. Nowadays, systems are so big and complex that teams of architects, analysts, programmers, testers and