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Software Development

Software Development

In a broader sense of the term "Software Development", it includes all that is involved between the conceptions of the desired software and the final implementation of the software product.

Software can be developed for a variety of purposes, the three most common being to meet specific needs of a specific client/business, to meet a perceived need of some set of potential users, or for personal use. Embedded software development, that is, the development of embedded software such as used for controlling consumer products, requires the development process to be integrated with the development of the controlled physical product.

Brief overview of Software Development Life cycle (SDLC):

Software Development Life Cycle (or SDLC) is the process which is followed to develop a software product. It is a structured way of building software applications. Most organizations have a process in place for developing software; this process may, at times, be customized based on the organizations requirement and framework followed by organization.

Knowledge about SDLC is very important for anyone who wants to understand S-SDLC. The Following are some of the major steps which are common throughout the SDLC process, regardless of the organization. Here is a photo representation of a Sample Software Development Life Cycle:

  1. Requirements Gathering or System Analysis : A Software Requirement Specification or SRS is a document which records expected behavior of the system or software which needs to be developed. Read more...
  2. System Design : Software design is the blueprint of the system, which once completed can be provided to developers for code development. Based on the components in design, they are translated into software modules/functions/libraries, etc… and these pieces together form a software system. Read more...
  3. Coding or Development :During this phase, the blueprint of the software is turned to reality by developing the source code of the entire application. Time taken to complete the development depends on the size of the application and number of programmers involved.Read more...
  4. Testing :Once the application development is completed, it is tested for various issues like functionality, performance, and so on. This is to ensure that the application is performing as expected. If there are any issues, these issues are fixed before/after going to production depending on the nature of issue and the urgency to go live for the application.Read more...
  5. Deployment :Once the application is ready to go live, it is deployed on a production server in this phase. If it is developed for a client, the deployment happens in a client premise or datacenter where there client wants to get the application installed.

What is S-SDLC?

S-SDLC stresses on incorporating security into the Software Development Life Cycle. Every phase of SDLC will stress security – over and above the existing set of activities. Incorporating S-SDLC into an organization’s framework has many benefits to ensure a secure product.

Current Trend

Current trend is to identify issues by performing a security assessment of applications after they are developed and then fix these issues. Patching software in this way can help, but it is a costlier approach to address the issues.

This cycle of Testing – Patching – Re-testing runs into multiple iterations and can be avoided to a great extent by addressing issues earlier in the Life Cycle. This next section covers a very important aspect – the need for programs like S-SDLC.


As an old saying goes – “Need is the mother of invention” – This is applicable for S-SDLC as well. There were days when organizations were just interested in developing an application and selling it to the client and forget about rest of the complexities. Those days are gone. A very simple answer to the question is – “The threat landscape has changed drastically.”

Key Areas before signing a software project contract.


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