SDLC Software Development Life Cycle

The inclusion of security into the Software Development Life Cycle (SDLC) is a key area to include in training for developers. There are a nearly innumerable variety of approaches to this with one of the commonly used being the Microsoft Secure Development Lifecycle (SDL) [4]. The SDL process includes training, requirements, design, implementation, verification, release, and response, as shown in Fig.

software life cycle definition

Software prototyping is about creating prototypes, i.e. incomplete versions of the software program being developed. For example, as the system analyst of Viti Bank, you have been tasked to examine the current information system. Customers in remote rural areas are finding difficulty to access the bank services.


With the software development life cycle, the process of software design is divided into small parts, which makes the problem more understandable and easier to solve. SDLC comprises a detailed description or step-by-step plan for designing, developing, testing, and maintaining the software. It is a process followed for software building within a software organization. SDLC consists of a precise plan that describes how to develop, maintain, replace, and enhance specific software. The life cycle defines a method for improving the quality of software and the all-around development process.

  • There is little room for change once a phase is deemed complete, as changes can affect the cost, delivery time, and quality of the software.
  • SRS is the reference for product architects to come out with the best architecture for the product to be developed.
  • The agile methodology produces ongoing release cycles, each featuring small, incremental changes from the previous release.
  • The coding phase of the SDLC is where the system is built or generated based upon the design documents and models.
  • Nevertheless, you should bear in mind that it’s possible to enjoy all these SDLC advantages only if all the team members genuinely stick to the plan.

This may involve training users, deploying hardware, and loading information from the prior system. The spiral model is suitable for large and complex projects that require frequent changes. The team collects all the necessary information and determines the preliminary ideas for creating a prototype. Programmers specify the conditions for prototyping, estimate the possible alternative options, as well as design the documents, according to which all the work will be carried out. We offer Application Performance Monitoring, Real User Monitoring, Server Monitoring, Logs Monitoring, Synthetic Monitoring, Uptime Monitoring, and API Analytics.

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Training usually covers operational training for support staff as well as end-user training. At this step, desired features and operations are detailed, including screen layouts, business rules, process diagrams, pseudocode, and other deliverables. The waterfall model arranges all the phases sequentially so that each new phase depends on the outcome of the previous phase.

software life cycle definition

Composed of line practitioners who have varied skills, the group is at the center of the collaborative effort of everyone in the organization who is involved with software engineering process improvement. Fundamentally, SDLC trades flexibility for control by imposing structure. Once a system has been stabilized through testing, SDLC ensures that proper training is prepared and performed before transitioning the system to support staff and end users.

FAQs on Software Development Life Cycle (SDLC)

It takes them days or even weeks to travel to a location to access the bank services. It’s easy to identify and manage risks, as requirements can change between iterations. However, repeated cycles could lead to scope change and underestimation of resources. Stackify’s APM tools are used by thousands of .NET, Java, PHP, Node.js, Python, & Ruby developers all over the world. However, regardless of the model you pick, there are a lot of tools and solutions, like Stackify’s Retrace tool, to assist you every step of the way.

The iterative model focuses on the repeated delivery and division of complex development processes into fractional segments. It is possible to identify any malfunctions at the initial stage and add adjustments gradually. One of the positive sides of this SDLC method is that it allows changes to be introduced quickly, and it is often a budget-friendly approach. This approach is most often used for short-term projects, when there is a strict well-defined scope of requirements and development methods towards the created product. It is especially favorable for products with high level of social and material responsibility, such as in healthcare or finance domains. Once the product is tested and ready to be deployed it is released formally in the appropriate market.

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The detail design and development is responsible for producing the product, process and material specifications and may result in substantial changes to the development specification. The iterative process suggests that teams begin software development with a small subset of requirements. Then, they iteratively enhance versions over time until the complete software is ready for production. This approach is an advanced one, used for the development of custom software for hard projects when the user expectations for the final product may be unclear.

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It includes tools and processes that encourage collaboration between developers, security specialists, and operation teams to build software that can withstand modern threats. In addition, it ensures that security assurance activities such as code review, architecture analysis, and penetration testing are integral to development efforts. There are various software development life cycle models defined and designed which are followed during software life cycle definition the software development process. These models are also referred as Software Development Process Models”. Each process model follows a Series of steps unique to its type to ensure success in the process of software development. Beta, named after the second letter of the Greek alphabet, is the software development phase following alpha. The focus of beta testing is reducing impacts on users, often incorporating usability testing.

What is the software development life cycle?

The basic principles of programming are simplicity, clarity and generality (Kernighan and Pike, 1999). The code should be kept simple, modular and easy to understand for both machines and humans. Bennett et al., 2010; Knuth, 2011] which describe best practices in programming both in terms of developing algorithms as well as coding itself. Code written should be generalised and reusable as far as possible and adaptable to changing requirements and scenarios. This problem has also been indicated in the literature (Gross and Yu, 2001 and Huang et al., 2006).

As a proven leader in the application security field, Synopsys offers a comprehensive suite of products and services perfectly tailored to this effort. The benefit of this approach is that product owners can see the results of each short cycle, provide their feedback, and make corrections if needed. At the beginning of the next cycle, software developers revise the previous version of the product and present it for the next round of feedback. As such, the Agile software development life cycle is known as a continuous process.

IEEE/ISO/IEC 12207-2017

In contrast, the Agile model for SDLC is a more modular and flexible approach. Agile approaches software development in incremental cycles, called sprints. Clause 4 describes the document’s intended use and conformance requirements.

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