You need a good plan to ensure your project goes smoothly. This plan helps the team create the software correctly and on time. It’s called the software development cycle, and it’s essential. The software development cycle helps catch mistakes early, saving time and money. It also helps plan how to do things right from the start. Good developers know about different cycle models and pick the best one for each project. This article will explain the seven phases of the SDLC (software development life cycle) and the different ways to do it. You’ll learn why this is important and what tools can help.

Let’s get started!

What Is System Development Life Cycle (SDLC)?

SDLC (software development lifecycle) is like a roadmap for making computer programs. It’s a plan that explains how to create, keep up with, replace, change, or make better specific software. This plan helps ensure the software is of good quality and done correctly. Many companies in the UK use this plan to manage their projects well and make successful products.

SDLC is about using the best ways to create tech solutions. This helps teams make great software that customers love. SDLC also helps companies look closely at each step, making things work better and cost less.

Where Is The System Development Life Cycle Used?

Software development life cycle (SDLC) is like a plan for making computer programs. It helps the people working on the project know what to do and when to do it. This plan helps them make the programs quickly and with fewer mistakes.

Here’s how SDLC helps:

  • It helps to plan what needs to be done.
  • It helps to guess how long things will take.
  • It helps to decide when each part of the plan will be done.
  • It helps to keep an eye on progress and make sure things are going as planned.
  • Everyone involved can see what’s happening at each stage.
  • It helps to make programs faster.
  • It helps to make clients happy.
  • It helps to reduce problems that might occur.

It can also be used by people who design and make new computer systems.

7 Phases of the System Development Life Cycle

There are seven main parts of how we make new computer systems today. Let’s look at them quickly:

Phase 1: Planning Stage

Before we start planning, it’s essential to understand how apps are made. Planning, or the first step of the app-making process, is when developers plan what they will do. They figure out the problems they’re solving and what they want the app to do. Planning helps them see any issues before they start making the app.

It’s also when they figure out how much money and resources they need. Planning sets the timeline for the project, which is essential if they’re making an app to sell.

Phase 2: Analysis Stage

In the 2nd phase, “analysis,” we gather all the essential details needed for a new system and develop initial ideas for prototypes. Developers might:

  • Figure out what the prototype system needs
  • Look at different options for prototypes
  • Study and understand what the people using the system need
  • Also, developers usually make “software requirement specifications” or SRS documents.

These documents list all the details about what the software, hardware, and network need for the system they want to make. This helps them spend less money or resources working with other development teams.

Phase 3: Design Stage

Before making a computer program, the builders plan how it looks and works. They think about things like:

  • How people will use it
  • How it connects to other systems
  • What it needs to run
  • Where it stores information

Then, they organize all their ideas into a clear plan. They also plan to use the program, teach others to use it, and keep it working well. After everything is planned, the bosses make a document to help everyone remember what to do next.

Phase 4: Development Stage

Developers write code and build the application based on earlier plans during the development stage. They use special tools called Static Application Security Testing (SAST) to help ensure the code is made exactly as planned.

Before this stage, developers plan everything carefully to make this part easy. They follow rules about how to write the code and use tools like compilers and debuggers. Depending on the project’s needs, they use languages like C++ and PHP to write the code.

Phase 5: Testing Stage

Creating software is only part of the job. After making it, we must test it to ensure it works well. We carefully check the software during testing to find and fix any problems or mistakes. This is important so that when people use the software, they have a good experience.

We also ensure the software meets the quality standards we decided on initially. How long testing takes depends on how complex the software is and what people need from it. Sometimes, testing is quick, but other times, it can take a while. 

Phase 6: Implementation and Integration Stage

After checking, the whole look of the computer program will be complete. The developers combine various parts or look into the primary set of instructions. They often use unique practice spaces to find more mistakes.

The computer program will be added to its surroundings and then set up. After this step, the program is almost ready to be sold and used by people.

Phase 7: Maintenance Stage

After the software is complete, people will start using it. The developers’ work continues to enter a phase called maintenance, Duri, during which they fix any problems users find and make any changes needed to keep the software working well. 

This might include fixing missed bugs before the software was released or updating based on user feedback. More extensive software might need more time for maintenance than smaller ones.

6 Key SDLC Methodologies

Many ways have been created to help build things on the computer faster and better. These ways are called SDLC methodologies.

1. Agile

Agile is a way of working that started in the 1990s. It’s different from older ways like Waterfall, which have lots of rules and paperwork. Agile is about giving customers what they want quickly and without too much paperwork. It’s also about working together, sharing and getting feedback fast, and being able to change things rapidly.

This way of working helps companies to be good at handling change and doing well in challenging situations. 


  • It’s flexible and can change quickly.
  • It works well for small and medium teams.
  • It gets working software to customers quickly, making them happy.
  • It keeps stakeholders (people interested in the project) and developers working closely together.


  • It can take a lot of time because of many meetings and events.
  • It might only work well for big teams of up to 15 people.
  • Managing an Agile project can be challenging. The project manager must ensure everyone knows their role and works well together.

2. Waterfall

The waterfall model is a way of managing projects. It starts with careful planning and then moves through different stages, with each stage finished before the next one begins. This approach is suitable for big, complicated projects that need much work and are hard to change once they start.


  • Helps plan well, including thinking about money and time
  • It has a clear structure and follows a set plan
  • Gathers all the requirements at the beginning
  • Each stage is done one at a time


  • Doesn’t handle changes well
  • Once a stage is done, it’s hard to go back and make changes.

3. Lean

The Lean methodology is like a set of rules for making things better and cheaper. It helps us do things faster and makes customers happier. It’s all about making things better and being nice to each other.

Lean helps us examine how we do things now and find ways to improve. It helps us work smarter, not harder.


  • We can work on many things at once.
  • We can see what everyone is doing.
  • We don’t waste things.
  • Our team works better together. 


  • Sometimes, it’s hard to know when we’re done.
  • We have to pay attention to everything, which can be tiring.

4. Iterative

This method divides the project into smaller parts, lasting two to six weeks. During each part, the team works on tasks to reach a goal. They try to plan as much as possible but also welcome changes.


  • Easy to see the progress
  • Can change plans easily
  • Can adapt to new needs
  • Reduces risks


  • Not great for changing plans
  • Each part is separate, with no overlap
  • Best for big projects.

5. Spiral

This way of making software is like building a LEGO set. First, we look at which pieces might be tricky or need to fit better together. Then, we create a little, check if everything is going okay, and add more pieces. We keep doing this until the whole set is built.

The spiral model is like a unique way of building that helps us when the set changes. It helps us be careful about problems and change things if needed.


  • It helps us deal with problems early on.
  • We can change things quickly if we need to.
  • We keep track of what we’re doing very well.
  • The people we’re building for can be part of the building process from the start.


  • It can be expensive because we need exceptional people to help with problems.
  • It’s only perfect for big, important projects.
  • If we don’t do the first part right, the whole project might not work well.


This is a unique way to make computer programs. It helps to find mistakes early. The V-model has steps to check the work at each stage. From the beginning, it starts checking when we write down what the program should do. This helps to fix mistakes quickly and makes the program better.


  • It divides the work into clear parts.
  • It helps to manage time well.
  • It starts checking the work early.
  • It helps to find and fix mistakes early.


  • It’s hard to change things once you start.
  • You can’t see a sample of the program early.
  • It has some risks and things that need to be clarified.


Software is like a giant puzzle. SDLC is a way to put all the puzzle pieces together smartly and organized. It helps make software quickly without starting from nothing. Using SDLC also helps turn a vague business idea into a real and working plan. It helps with how the software is made, how it changes, how people use it, and other essential things.

Another good thing about SDLC is that it helps plan everything from the start. It helps determine how much things will cost, who will work on them, and the goals. If you want software development assistance, contact Integrated IT Solutions now!