In the previous article “Introduction to Software Development Techniques” the definition, list of subtopics and other terms related to it where explained. So this article we will explain what you need to know about Software development life cycle. Overview of what to expect from this article is listed below;
- What is SDLC
- Difference between Software development life cycle and System development life cycle
- How it works
What is SDLC
SDLC is an acronym which stands for “Software development life cycle” or “System development life cycle”.
Difference between Software development life cycle and System development life cycle
The difference between the two is that “Software development life cycle” only looks at software components development planning, technical architecture, software quality testing and deployment of working software. While “System development life cycle” involves end-to-end People, process, Software/Technology deployment. This includes Change Management, training, Organizational updates, also.
What is software development life cycle
SDLC is a process followed for a software project, within a software organization. It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software. The life cycle defines a methodology for improving the quality of software and the overall development process.
Software is a complex product that is developed and delivered through a series of steps. That is the one thing all the various methods have in common: one way or another, software, like all products, starts as an idea. The idea then becomes a document, or perhaps a prototype, depending on the method in use.
Whether a document, diagram, or working software. The artifact created in one step becomes the input to the next step. Eventually, the software is delivered to the customer. The sequence of steps used by these methods is commonly referred to as the SDLC
The profession of “software developer” has existed since the first computers, and their operators, as far back as the days of ENIAC and vacuum tubes. Practices and methods for developing software have evolved over the decades since the invention of the computer.
Those methods have adapted to the state of the art in computer hardware, development tools, and modern thinking about the organizational management of software development teams. With this progress, new methods of software development have grown out of private and public software development efforts around the world.
These methods vary widely in approach, yet they share a common goal: to develop software as cheaply, efficiently, and effectively as possible.
How Software development life cycle works
The process of software development is a never-ending cycle. The first release of a software application is rarely “finished.” There are almost always additional features and bug fixes waiting to be designed, developed, and deployed.
Reports from error monitoring software about usability and bugs feed back into the process of software development, and become new feature requests and improvements to existing features. This is why the SDLC is the most general term for software development methods. The steps of the process and their order vary by method. Regardless of method, they typically run in cycles, starting over with each iteration.
Without some kind of structured plan, software development teams tend to devolve into a “herd of cats.” Developers don’t know what they’re supposed to create. Project managers have no idea how much progress is made towards completion of a project. Without a plan, the business doesn’t even have a way to decide whether the final product meets their requirements.
A formally defined method for software development in the form of the SDLC achieves a number of benefits:
- A common vocabulary for each step
- Defined communication channels between development teams and stakeholders
- Clear roles and responsibilities among developers, designers, business analysts, and project managers
- Clearly-defined inputs and outputs from one step to the next
- A deterministic “definition of done” that can be used to confirm whether a step is truly complete