System Development Life Cycle (SDLC) is a series of six main phases to create a hardware system only, a software system only or a combination of both to meet or exceed customer’s expectations.

System is a broad and a general term, and as per to Wikipedia; “A system is a set of interacting or interdependent components forming an integrated whole” it’s a term that can be used in different industries, therefore Software Development Life Cycle is a limited term that explains the phases of creating a software component that integrates with other software components to create the whole system.

Some more specific takes on SDLC include:

Rapid Application DevelopmentTest-Driven DevelopmentWaterfall Model
Iterative ModelExtreme ProgrammingScaled Agile Framework
Agile ModelScrumRational Unified Process
Big Bang ModelV-ModelConceptual Model
Kaizen ModelKanban ModelSpiral Model

Below we’ll take a general look on System Development Life Cycle phases, bearing in mind that each system is different from the other in terms of complexity, required components and expected solutions and functionalities:

System Development Life Cycle Phases:


1- System Planning 

The Planning phase is the most crucial step in creating a successful system, during this phase you decide exactly what you want to do and the problems you’re trying to solve, by:

  • Defining the problems, the objectives and the resources such as personnel and costs.
  • Studying the ability of proposing alternative solutions after meeting with clients, suppliers, consultants and employees.
  • Studying how to make your product better than your competitors’.

After analyzing this data you will have three choices: develop a new system, improve the current system or leave the system as it is.

2- System Analysis

The end-user’s requirements should be determined and documented, what their expectations are for the system, and how it will perform. A feasibility study will be made for the project as well, involving determining whether it’s organizationally, economically, socially, technologically feasible. it’s very important to maintain strong communication level with the clients to make sure you have a clear vision of the finished product and its function.


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