Software lifecycle

When thinking about anything related to life, there’s always a beginning and an end. Software development isn’t any different from that idea. While software is being created, its lifecycle is barely starting.

Software life cycle models describe phases of the software cycle and the order in which those phases are executed.

Software development has stages through the entire process and sequences that are followed step by step in order to fulfill with satisfaction the whole project. Some of these stages are:

Requirement gathering and analysis
Design
Implementation or coding
Testing
Deployment
Maintenance

Although disappearing or dying isn’t part of that list, I would include that as the final step on the lifecycle of any kind of software since there will always be other that will replace the existing ones and make those obsolete.

If you’d like to read more on this topic, I’ve found some interesting sources to have other approaches on this topic.

Source 1 Source 2

Source 3 Source 4

Software Lifecycle

What is Software Lifecycle?

SLC is a term used in Software Engineering to describe a process for planning, creating, testing, and deploying an information system. The process is composed by several phases that focus on delivering a high quiality product to the customer:

-Preliminary analysis: propose alternative solutions, describe costs and benefits and submit a preliminary plan with recommendations.
-System analysis: Defines project goals into defined functions and operation of the intended application.
-Systems design: Describes desired features and operations in detail, including screen layouts, business rules, process diagrams, pseudocode and other documentation.
-Developing: Here you write the code and implement all the planning.
-Integration and testing: This space is for testing and debugging.
-Acceptance, installation, deployment: Here the program is complete and pushed into the market.
-Maintenance: Keep track of the software and make sure it does not become obsolete.
-Evaluation: This is the time to improve, check the complete design and modify it if something is wrong.
-Disposal: The disposal activities ensure proper migration to a new system.On this phase the old data is destroyed.

There are a lot of models for this methodology, some of them are:
Waterfall model, Iterative model, Agile model, Spiral model, V-model and Big-Bang model

Why is important to know about Software Lifecycle?

Because the main focus of this methodology is to create quality software to make the customer happy and that´s the only think big companies care. So, if you want to work at a big software producer company you must know at least the proces of software developing. It is very important that software keeps upgrading and geting better for the customer, not only adding more features but also to change or remove the old fetures that people stop caring Continue reading →