Software Development Methodology – What is it Exactly

Software development methodology is basically the art of developing quality software. This involves series of software development process aimed towards perfecting the software. An error free, defect free, time saving and value giving product is what the methodology is after. The steps involved in engineering the development of software are a long process, which require experience and expertise. There is a lot of struggle, hard work, ideas, tweaking, testing, rinsing, repeating etc put into its production. The developers are striving to bring out the best in their line of work by updating the software versions quite often. It is now almost a challenge for the developers to update their software to slay their competition.

Software development methodology is actually the whole process undergone in the development of software. This involves series of steps like researching, planning, analyzing, designing, coding etc. In short we could say the developers are working on customizing software to the needs it has to serve. Leveraging experience, industry knowledge and technology to create software, are some of the basic norms involved in the development methodology.

Have you ever wondered how fast technology has been developing in the recent years compared to earlier times? Just imagine what technology we had just two years back and how different it is in the present day. Even our life styles have changed beyond recognition because most of our tasks have become simpler and easier, we can get things done much faster and more efficiently. One of the reasons for this is the advance in software development. Things have started happening all around us, things which were once in our wildest dreams has come in reach of our finger tips. What causes all this? You will again come up with the very same answer software development? All these happenings are due to the hard work and toil put in by teams of software developers

When we speak of software methodology what comes readily to mind is agile methodology which is a more recent term in the software industry. Meaning, just as the word suggests the ability to be agile with technology. It may also be described as being versatile with the practice or more fashionably put as changing with the changing trends. Not every industry can boast of advancing from well established practice and being accepted widely. But with software development if you can provide value then everyone will look forward to embracing you.

When particular software is developed hundreds of similar ones crop up every where so selecting the best could become an ache in the back. So if it is quality you require please stand by the time tested and experienced developers who do not compromise on quality. They will also see to it that the software is updated with newer versions and will not let you bother with such details. It is common now to see one software technology being replaced with another more advanced more developed and simpler products. Every industry has its share of software and technology developments and most of them are eagerly looking forward to what new product the software development methodology is bending on providing them.

Software Development Life Cycle – Introduction Model Stages and Advantages

What is the Software Development Life Cycle (SDLC)?

SDLC or Software Development Life Cycle is essentially the process or phases of a model or methodology, which software engineers and developers follow in developing an application or software. In simpler words, it is a process consisting of a series of planned activities for planning, creating, testing, deploying and maintenance of software.

SDLC is often referred as software development process, as it consists of all tasks, which needs to be followed while developing an application or software. SDLC is followed within IT development companies to develop, alter, replace or enhance the performance of the software. ISO/IEC 12207 is an international standard for SDLC, which ensures high quality of the newly developed software. It also helps IT development companies in improving the overall quality of their software development services.

What are the major SDLC Models, followed in the IT Industry?

There are various SDLS models, which are currently followed in the IT Industry. Often referred as ‘Software Development Process Models’, all the process models follow unique software development steps, ensuring 100% success of the development projects.

The major software development life cycle models are-

  • Waterfall Model
  • Iterative Model
  • Spiral Model
  • V-Model
  • Big Bang Model

Other related models are Rapid Application Development (RAD), Prototype and Agile Models.

The advantages of choosing an appropriate Software Development Life Cycle (SDLC)-

  • Increased Product Quality
  • Increased Development Speed
  • Improved Client Relations
  • Improved Tracking & Control
  • Decreased Project Risks
  • Decreased Project Management Overhead

What are the different stages of SDLC?

Stage 1:

Planning and Requirement Analysis

This is the most important stage in the SDLC. This stage needs input from the customers, sales team, industry experts, a marketing team and their survey reports. After which, senior business managers and developers of a software development company plan the project approach and the development model.

Stage 2:

Designing

After the analysis of requirements and finalizing the Design Document Specification (DDS), the product architecture is designed by an expert team. This architecture has to stand upon various parameters such as budget, time, product robustness, risk assessment and design modularity, after which it is considered for the development.

Stage 3:

Development

The actual development of the software or application starts at this stage. The team of engineers and developers follow the coding guidelines set by the organization and use different tools for code generation. The programming code is generated as per the details documented in the DDS. The developers use different high level programming languages as per the requirement.

Stage 4:

Testing

In this stage, the final product goes through a pre-defined road of testing, where defects or bugs in the product are reported and then fixed by the developers. This stage ensures that the final product meets the highest quality standards, which are accepted worldwide.

Stage 5:

Deployment

At this stage, the final product is deployed at the client base. At times, the software is integrated with the client’s current application and database. All the deployment and integration works are done under the guidance of expert software engineers and developers.

Stage 6:

Maintenance & Support

Most of the reputed IT development companies also provide complete maintenance and technical support, post deployment of the final product at client base.

A Guide To Understanding The Process Of Software Development

Many business people don’t fully understand the complexity of a software development process. It’s natural, since specialized books about development are read by developers and other IT people, and many others might still be referring to a software project as ”coding” or ”writing”. With better luck one might add ‘designing’ and ‘testing’. Quite inaccurate.

One can think of several metaphorical comparisons to describe software development, such as writing a book or building a house. Some of them are a good light in the dark, some are rather misleading. And while many people may argue whether creating software is an art, a science, or a precisely elaborated process, we’d leave that choice to someone else. It cannot be described sparsely. But we’ll try to give some descriptions and comparisons in a compact and clear way.

Do We ”Write” Software?

One of the common but rather vague things is comparing creating software with writing. Writing code, writing a book, and so on. You can start writing a book without a plan and go with the flow; with custom software development you cannot, unless developers do a rather small piece of software on their own – and for themselves. Moreover, an outsourced software project never starts with writing code.

Books and software may both have strict deadlines. But once a book is published, what’s written is written; rewriting is not an option. But software keeps being under constant improvement with new versions being released – it’s a natural thing. It’s almost impossible to get every need of your end user, catch up with business and technological changes once and for a lifetime. Books aren’t that dependent on changes; software is. But that’s good: your software, unlike a book, can’t become just another mediocre thing on the market, can’t become irrelevant and outdated. The processes are absolutely different: we prefer using the words ”create” or ”build” software rather than ”write”.

Do We ”Grow” Software?

”Growing” software on a good basis and a good set of documentation is possible to a certain extent. Like with writing, it’s not the best description one can suggest. It partially gets the incremental, agile nature of making and maintaining relevant software. But while ”growing”, the product is rarely tasty until it’s ripe, and the owner has to wait awhile.

The difference is, in software development there are different stages of being ”ripe”. Startups usually demand rolling a minimum viable software product on the market, getting feedback and making corrections and improvements. Each version is more ”ripe” than its predecessor, and it has to be ”watered” by support and maintenance, kept fresh amidst all the business and technological changes.

Do We ”Build” Software?

This one is considered by many specialists the closest way to describe software development, and we can agree with that. Construction works show the huge importance of careful planning, preparing, guiding the work, and performing it. The limits of software depend on how its architecture is constructed. The amount of works doesn’t grow gradually, since every building is different, and requires different approach. There can be a hospital, an office building, a school or a barn, and same physical size doesn’t mean equal amount of labour. Something is done with concrete, something can be done with wood and nails, and the latter doesn’t work well with complex and valuable software for mobile startups and other businesses.

– Everything depends on the kind of a building you need. You need to figure out the problem the software will solve, and conduct the necessary preparations, do market research, gather info, etc. The more complex your software is, the more resources must be spent on planning. Bad planning – and the whole app fails, falls like a house of cards by the first gust of a wind.

– Then you and your chief architect (project manager) can proceed to design that perfectly combines functional requirements and interface, resulting in proper user experience. Sure you want those who will work or live in the building to be fully satisfied with it. Same thing with software. One more good thing, once the design is approved, it’s way easier to give more precise estimations for the remainder of the construction (development) works.

– When furnishing a house, you needn’t building things you can buy: household appliances and furniture. It’s much cheaper and way faster. Same with software: if your software development team is experienced, it will use all the available resources to stay away from writing needless basic things: there are lots of software toolkits, frameworks, classes, and libraries for that, each for a particular case. And if the team means business, they will easily find tools and technologies that will get your tasks done as fast as possible. Custom pieces of furniture take more time and efforts, but in most cases there are already existing pre-built ways to save your time and money without compromising security and efficiency of your software.

– There will always be changes in functional requirements. Again, changes can painlessly happen within the planned architecture. Here we once more emphasize the importance of preparations – although this topic is worthy of a separate article. And we cannot go anywhere without mentioning quality assurance, which constantly checks different aspects of how the software works. What’s more – even a minor change involves testing, so that’s not the place to cut the costs (in fact, QA usually takes about 30% of the whole development time).

– Optimization of software (inner walls of a building) is limited to the approved architecture, and here main expenses are all about labour, not materials. But what you receive in the end is better software and satisfied users. Meanwhile users speak their minds on what they would like the apartments to look – and one should never neglect these opinions.

– One more thing worth noting – a good architect (or a good creative expert in software development) is always ready to consult you on things that should be solved immediately, and what can be left for later without breaking your plans or the quality of your software. You are most likely to not know the subtleties of the technical side – so leave making suggestions and explanations to your team. Unless you are an experienced IT person and you needn’t reading this article to get these insights.

As you can see, the last example is really the closest, and the list of similarities can be continued forever. But the ones we presented here should be enough to understand the process of software development, which is impossible without patience, expertise of the team, and mutual understanding.