Traditional methodologies, as their name indicates, are those that have been used for many years. They seek to impose discipline on the software development process and thus make it predictable and, therefore, efficient.

In fact, these methodologies have a predictive approach, where a sequential process is followed in one direction and without going back. The estimation / capture of requirements is carried out only once (exactly, only once) at the beginning of the project and that is precisely why our estimation will be very important since all the resources that we will use in the project depend on it.

If we want to adopt a traditional methodology, the development of a project must always start with a rigorous process of capturing requirements, analysis and design. Remember: the requirements are agreed upon once and, for the entire project, no changes to them are expected.

Agile methodologies emerge as an alternative to traditional ones because they help us reduce the probability of failure due to underestimation of costs, times and functionalities in changing environments.

Agile methodologies are those that a company uses to manage decisions, projects and budgets, with the aim of speeding up decision-making and benefiting production in a software development project.

These allow you to give flexibility to a project and manage it effectively. In addition, they adapt the work to the company's environment so that benefits are obtained, reducing costs and maximizing production. These work methodologies are often widely used by software and technology companies in general.

Types of agile methodologies (view)

Despite the fact that the types of agile methodologies are constantly renewed, the most used are presented below.

- Kanban. This method consists of measuring the time of each manufacturing process, to optimize the results in future occasions.

- DevOps. This methodology is dedicated to software development and ensures constant ideas´ launching.

- Lean Startup. This method deals with product launch and strives to shorten the entire processes.

- Design Thinking. It is based on providing solutions to production, through design tools, researching and defining the public, in order to use more striking and effective methods.

- Scrum. This methodology is dedicated to the development of the product with the aim of making constant progress.

Instead of being based on complete planning, its development is periodically reviewed. In addition, it allows the employee to work based on the results of his work, so that he remains committed to fulfilling a certain task and has work flexibility, which in turn motivates him.

Characteristics of agile methodologies The main characteristics of agile methodologies are the following:

- Agile methodologies are fast, specific and dynamic. They stimulate the attitudes and structures of the team, as it makes communication easier.

- They consider the client as part of the production team.

- Deliveries are early and continuous.

- Its structure changes according to the competition.

- Most conversations are face to face.

- Business people and developers always work together.

- Its actions are adjustable and simple.

Advantages of agile methodologies

- They use solutions during the work process, without the need to wait until the end.

- Clients can contribute at all stages, to improve production

- The delivery of the product or service is faster.

- Unnecessary tasks are eliminated, as efforts are centralized and unified.

- Creating priorities optimizes resources and results.

Disadvantages of agile methodologies

- They depend to a large extent on the team leader, whose work and presence become indispensable

- Projects´ files are not collected and there may be a lack of documentation, since the solutions are only proposed to be carried out.

- Wrong solutions may arise that lead to serious consequences in full production work.

Advantages of traditional methodologies

Traditional methodologies are the first techniques that emerged to be used in software engineering and carry out planning. The following are their main advantages:

- They focus their attention on keeping an exhaustive documentation of the entire project.

- They follow a detailed project plan

- The stages are clearly defined by defining roles.

Disadvantages of traditional methodologies

- High costs when implementing changes

- They don´t offer good solutions for projects where the environment is volatile

- They execute the stages only once. What is defined in each stage is immovable, and until a stage is successfully completed, the following one does not start

- The user does not see the product until the end