The time between the product is initially designed and finally released is called a software development life cycle (SDLC). Software development is a complicated process that usually, consists of a certain number of phases. Let’s see what each phase is responsible for, how it works, and what results it gives with a guide to step by step software development.
7 Core Phases of Software Development
#1 - Brainstorming
Coming up with innovative ideas is often challenging because recent years have already brought us so many brand new IT products and technological innovations. Because of bunch of out-of-the-box solutions product and project managers together with developers have to think globally to offer something different.
A technique of brainstorming is considered to be effective in IT environment as a creative method to find out the best solutions and ideas appropriate for implementing them during the software development process. All members of brainstorming process contribute their ideas and offers during the discussion. This allows everybody to feel useful and responsible for the outcomes.
This stage is also called planning as it generates the main requirements to the projects as well as creates a general roadmap. Planning is one of the most important phases of SDLC because it influences the whole development process and the ways everything will be done.
#2 - Feasibility Analysis
Before investing heavily in project, CEO and all team members have to carry out a feasibility analysis. The feasibility study can show how successful a project could be, evaluates all factors including economical and technical that affect the project development. Every member of the team, testers, developers, PMs and others, must provide a clear estimate of time they need to complete their specific tasks, efforts and resources they need to involve. It will help calculate all expenses.
#3 - Design
Conceptualizing the product is made on design stage of SDLC. Design is developed according to the specifications written during the first two stages. Designers, like any other architects, build the whole structure of the project and provide the final prototype that will be used for the next stages of development process.
#4 - Programming
Here is coding where developers are getting started. Every programmer has his own task for coding for which he is responsible. The process of programming is controlled by project managers. This phase is the most time-consuming operation.
#5 - Integration
Integrating of all sources and environments is a must in software development as it helps figure out on time how many issues, conflicts, and bugs are there. Most teams, especially agile ones, use continuous integration. Such teams execute unit tests, use automated compilation and tests.
#6 - QA
QA engineers test the quality of the code written by developers. They use different frameworks and kinds of testing to discover if there are any bugs in the system. Testers write test cases and report the bugs to developers to fix them.
#7 - Release
First software release will be followed by releases of next versions of the product. It is the final stage of development that can be also followed by maintenance and support.
Each of the stages of SDLC life cycle depends on the model of software development a company chooses. Let’s figure out what are the main methodologies that could be used in development.
Most Popular Software Development Methodologies
A team chooses a certain set of tools and methodologies for design, development, testing, and management processes. It depends on the goals that stand before the team and the objectives of a product to be built. Here are the most popular software development models used by the experienced teams:
Waterfall model assumes that each stage is completed before the next one starts. For example, QA engineers start testing only after programming has been completely done.
V model is much similar to waterfall with the slight difference - testing takes place simultaneously with development process.
Incremental model is divided into builds. It means that the product is built with separate blocks/parts. In other words, the product is built as a puzzle.
Rapid Application Development is another model that is used by IT companies where a project development is divided among small teams who work simultaneously.
Agile is a kind of incremental model where each release is focused on better software quality. This methodology is widely spread among teams and customers as it shows a continuous process and fast results. Time taken for each build can be measured here rather by weeks than by months.
No matter what methodology your team uses the entire software development process must include all main stages: determining specifications, design, validation, and maintenance.
If you are currently planning to start developing your software or you want to be one of the companies using big data and need any outsourcing assistance, contact our dedicated team of developers. We use different methodologies depending on the project’s requirements.