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Software Development

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What is software development?

Software development refers to a set of computer science activities dedicated to the process of creating, designing, deploying and supporting software.

Software itself is the set of instructions or programs that tell a computer what to do. It is independent of hardware and makes computers programmable. There are three basic types:

System software to provide core functions such as operating systems, disk management, utilities, hardware management and other operational necessities.



Steps in the software development process-:

Developing software typically involves the following steps:

  • Selecting a methodology to establish a framework in which the steps of software development are applied. It describes an overall work process or roadmap for the project. Methodologies can include Agile development, DevOps, Rapid Application Development (RAD), Scaled Agile Framework (SAFe), Waterfall and others. (See the glossary.)
  • Gathering requirements to understand and document what is required by users and other stakeholders.
  • Choosing or building an architecture as the underlying structure within which the software will operate.
  • Developing a design around solutions to the problems presented by requirements, often involving process models and storyboards.
  • Building a model with a modeling tool that uses a modeling language like SysML or UML to conduct early validation, prototyping and simulation of the design.
  • Constructing code in the appropriate programming language. Involves peer and team review to eliminate problems early and produce quality software faster.
  • Testing with pre-planned scenarios as part of software design and coding — and conducting performance testing to simulate load testing on the applicatio.
  • Managing configuration and defects to understand all the software artifacts (requirements, design, code, test) and build distinct versions of the software. Establish quality assurance priorities and release criteria to address and track defects.
  • Deploying the software for use and responding to and resolving user problems.
  • Migrating data to the new or updated software from existing applications or data sources if necessary.
  • Managing and measuring the project to maintain quality and delivery over the application lifecycle, and to evaluate the development process with models such as the Capability Maturity Model (CMM).
  • The steps of the software development process fit into application lifecycle management (ALM). The IBM Engineering Management solution is a superset of ALM that enables the management of parallel mechanical, electrical and software development.
  • Requirements analysis and specification
  • Design and development
  • Testing
  • Deployment
  • Maintenance and support

Software development process steps can be grouped into the phases of the lifecycle, but the importance of the lifecycle is that it recycles to enable continuous improvement. For example, user issues that surface in the maintenance and support phase can become requirements at the beginning of the next cycle.


Software development is the process of creating, designing, programming, testing, and maintaining computer software or applications. It encompasses a wide range of activities that result in the production of software, which can be used on various computing devices, from personal computers and smartphones to embedded systems and large-scale server platforms.

Here are some key aspects of software development:

  1. Planning: This phase involves defining the project’s goals, scope, and requirements. It includes creating project plans, timelines, and budgets.
  2. Design: During this phase, the software’s architecture and user interface are designed. The design phase can encompass system architecture, database design, and user interface design.
  3. Implementation (Coding): Developers write the actual code based on the design specifications. This is where the software’s features and functionality are built.
  4. Testing: Software testing is crucial to identify and fix bugs and ensure that the software meets its requirements. This phase may include unit testing, integration testing, and user acceptance testing.
  5. Deployment: Once the software is thoroughly tested and considered stable, it is deployed for use. This can involve deploying it to a server, publishing it on an app store, or distributing it to end-users.
  6. Maintenance: After deployment, software requires ongoing maintenance to address bugs, update features, and ensure it remains compatible with changes in the technology environment.
  7. Documentation: Proper documentation is essential for understanding and maintaining the software. This includes user manuals, technical documentation, and inline code comments.
  8. Version Control: Developers use version control systems (e.g., Git) to manage changes to the codebase, allowing them to collaborate, track changes, and roll back to previous versions if needed.
  9. Agile and Iterative Development: Many software development projects follow Agile methodologies, such as Scrum or Kanban, which emphasize flexibility, collaboration, and iterative development.
  10. Programming Languages and Tools: Developers use various programming languages and tools based on the project’s requirements. Common programming languages include Python, Java, C++, and JavaScript, while integrated development environments (IDEs) like Visual Studio, Eclipse, and PyCharm are often used for coding.
  11. Software Development Life Cycle (SDLC): The SDLC is a framework that outlines the stages and activities involved in software development. Common SDLC models include Waterfall, Agile, and DevOps.
  12. Software Development Paradigms: Software development can follow different paradigms, including object-oriented programming, functional programming, and imperative programming, depending on the project’s needs and the developer’s preferences.
  13. Security and Quality Assurance: Ensuring the security and quality of software is crucial. This includes following best practices to protect against vulnerabilities and conducting code reviews and testing.

Software development is a dynamic field that continually evolves as new technologies and methodologies emerge. It is a collaborative effort involving software engineers, designers, testers, project managers, and other professionals to create functional and efficient software solutions.






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