What is the System Development Life Cycle?


The SDLC is a model or methodology used in project management to define the steps of the development process and how they work. There are several SDLC models with a few differences, for example, generally this model has 7 steps, but they can be as much as 5, upwards to 12 (in Necodex we use 8) depending on how the team works better.

Now to define it step by step, this is how we use it:

system development cycle

1. Analysis process

The needs of the system are evaluated and we define if there are ways to solve them. The requirements and the difficulties to develop it, and we plan how we are going to work, with times and dates. 

2. Prototype design

We start working with the model of the system, to see if we can solve the basic requirements, validate the functionality and analyze the data, at the same time that the UI UX is worked.

3. Preparation of the work plan

Now that we have some data to work with, we can assign the tasks to the specific team members, and estimate the times that will be needed to finish the system and launch it.

4. Software development

Now we deploy the whole team to the development process, some elements can be worked simultaneously while others need special attention or are sequential to other processes and need to wait.

5. Tests

When we have advanced in the development we can start testing, even when the system isn’t finished. Here we can test the functionality or if the UI UX works. 

6. Validation

With the system almost finished, it is time for the last tests, however, this time the tests are with a greater number of people who are part of the end-users of our system, to receive the necessary feedback.

7. Implementation

The steps before and after the launching of the system. At this point, everything is validated, but there are always different circumstances for the wide number of end-users, so it’s good to check how they respond, how the servers are keeping up, and the system itself.

8. Maintenance and continuous improvement

After the successful launching of the system, we need to keep giving the necessary maintenance to it. Check if everything is still working fine and there wasn’t any problem with the users, tools, servers, or elements of the system. If all of that is ok, then we can see how it can be improved, maybe there is an updated tool, or some new tech that can be used to optimize the system.

software development

This is a really simple explanation of our process, and as we do, the System Development Life Cycle can be adapted to your teams or your own methodologies, like Agile Development, Rapid Application Development, or Joint Application Development. That’s why you can find SDLC models with different steps. 


  • The first advantage is that you can see the entire project from the beginning, choose the team members, assign the activities and define timelines.
  • You can work different parts of the process simultaneously, due to having everything well organized.
  • You can determine the costs from the beginning. 


  • First of all, since we are making assumptions from the beginning, in the case that there were complications at some point of the process, the timelines would need to change, and with that, it can be difficult to estimate the costs.
  • Since not all the processes can be worked simultaneously, one team can make others slow down in some cases.

Now that you know how the System Development life cycle works, adapt it to your own team, and if you choose to use more or fewer steps just remember to keep optimizing them, as the tech and methodologies keep growing and getting better faster and faster these days, so we need to be ready and disposed to change, adapt and grow. 

If you want to learn more about it, you can contact us or find more right here. Be sure to follow us on our blog and social media to stay updated on this and more topics. See you in our next post!



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