Software life-cycle models advantages and disadvantages

Also, software is produced early in the software life cycle. Strong approval and documentation control. It is suitable for high risk projects, where business needs may be unstable. A highly customized product can be developed using this. Disadvantages of Spiral Model: It is not suitable for small projects as it is expensive. It is much more complex than other SDLC models. Process is complex.

Too much dependable on Risk Analysis and requires highly specific expertise. Difficulty in time management. As the number of phases is unknown at the start of the project, so time estimation is very difficult. Spiral may go on indefinitely. End of the project may not be known early. It is not suitable for low risk projects.

May be hard to define objective, verifiable milestones. Large numbers of intermediate stages require excessive documentation. Assigning the right kind of task to the right member with right aptitude takes half of the worry away.

And keeping a track that no member is overloaded with work is also very important. Taking your whole team with is very integral. Explaining the task to the team members and providing proper guidance on how that should be completed is a major responsibility.

And organizing process-related training for your team if there is a requirement of it also comes in duties of project manager. Communicating with the team members, your clients, and the higher authorities is very much significant. And providing updates to project stakeholders at all levels also fall in this category. Keeping a check on the quality of the work is the main focus here.

Not just the quality of the work matters but the resources are also very much important. Monitoring that the project is on track in terms of assets and resources is a crucial part of this phase.

Furthermore, the closure phase starts. In the project management life cycle, the closure phase comes with the final deliverable, release project resources, and determining the success of the project. After completion of a major project, it is the duty of the project manager to evaluate things and see what did and did not work out in the project. Basically, evaluation is supposed to be done in this phase of the whole project.

Determining whether the set goals are achieved and if yes, then to what extent. Checking if all tasks are completed on time and on assigned budget. And examining if the initial problem is solved. Investigating if all the members completed their assigned tasks on assigned time. And check whether they met their goals keeping the quality of work high.

Checking for loose ends in the project before handing it over to the clients. And also reporting to the key stakeholders comes at this phase of the project management life cycle.

And also note the new lessons down for coming similar project in the future. Checking the amount used and unused money from the project. In case of excess money left, assigning it to some future project. The project is done by now, either it was a complete success or your team failed in reaching the heights, no matter what the outcome is. You have learned so much, which will be so helpful for the future projects you are going to work on.

You will be ready to implement all the lessons in the coming projects. Finding the right and suitable tool according to your requirements can make any difficult project easier. Selecting one model out of many is a little tricky. But if you pay close attention to project management life cycle models advantages and disadvantages, half of your stress will fade away.

Mapping out your project beforehand and then looking for some Process Models of Software Engineering to assist you is the correct approach. Which life cycle will work best for you? This is an important strategic question. Because selecting the wrong model could lead to disastrous results. Project life cycle models are not interchangeable. So, it is way smart to first lay out your risks and problems which your project might face at any point of the procedure and then selecting a process model that reduces those risks.

On the other hand, think about delayed deliveries, unhappy clients, project overruns, and canceled projects. Nobody is looking forward to such a disaster. So here is a comparison of most of the project management life cycle models and explanation of the advantages and disadvantages of process models in software engineering. This is the most traditional approach to software development. In fact, when it came out in , the US Department of Defense was actively promoting the use of this method in all the projects.

Traditional project management includes a set of developed techniques used for planning, estimating, and controlling activities. The main aim of this model is to reach the goals in assigned time, assigned budget, and in accordance with specifications.

Traditional project management basically uses on projects where activities are complete in a sequence and there are very fewer chances of changes. The concept of traditional project management is based on predictable experience and predictable tools. Each project has to follow the same cycle assigned. The waterfall defines as a Sequential Development Model with clear deliverable for every phase to come.

This is the classical system development model. It consists of discontinuous phases:. Here is an overview of some of the advantages and disadvantages of traditional project management or the Waterfall Model. These are some highlights which explain the advantages and disadvantages of the traditional project management approach.

Iterative Development model aims to build the whole software in terms of small portions of all the features. The software builds while keeping the initial scope in mind and chunks release quickly to get customer feedback instantly.

An early version of the original project with limited features release beforehand. In order to create market value and get customer feedback. In each phase, a portion of the system delivers, passing through requirements until the deployment. Here are some main points which will draw attention to the advantages and disadvantages of this process model in software engineering:. This process model of Software Engineering is a risk-reduction base model.

It breaks the complete software project into mini projects like an iterative model. Each mini model has one or more major risks to handle. For projects with risky elements, it is beneficial to run a series of risk-reduction iteration beforehand. Just like any other approach, this process model also has some advantages and disadvantages which come it different and unique for special projects.

Agile Methodologies introduce as the result of the needs of software development applications. It accommodates the fast-paced evolution of the internet.

Agile submit the deliverable in stages. The main characteristics which make agile standout are the delivery time, which is in matters of weeks. Agile also covers the concepts of collaboration, documentation, and others. XP and Scrum are two of the practical uses of the agile model. Here are few points describing the advantages and Disadvantages of the Agile Process model in software engineering:.

It involves different phases such as planning phase, analysis phase, design phase, implementation phase and maintenance phase. Different aspects of the team were also added to these particular practices. This development approach has been used by many countries for their projects to get effective results.

The practices related to adaptive software developed offers potential to accommodate change as well as are fully adaptable in the confused environments with different products evolving with very little learning and planning. Different phases of adaptive software development involve Speculate, collaborate and learn. These given three phases reflect the dynamic nature regarding the adaptive software development. The adaptive development unambiguously replaces the Determinism with the Emergence.

Predictive SDLC System Development Life Cycle model is defined as an approach that assumes the planning of the project initially before starting the project and that the new system which can be established or developed as per planning is done initially. Different processes involve in traditional predictive approaches are an initiation, project planning, analysis, design, implementation as well as deployment. The most famous solutions regarding the project management being deployed these days are predictive and adaptive.