Choosing the right Software development life cycle model


Selecting a Software Development Life Cycle (SDLC) methodology is a challenging task for many organizations and software engineers. What tends to make it challenging is the fact that few organizations know what are the criteria to use in selecting a methodology to add value to the organization. Fewer still understand that a methodology might apply to more than one Life Cycle Model. Before considering a framework for selecting a given SDLC methodology, we need to define the different types and illustrate the advantages and disadvantages of those models (please see Software Development Life Cycle Models and Methodologies).

How to select the right SDLC

Selecting the right SDLC is a process in itself that organization can implement internally or consult for. There are some steps to get the right selection.

STEP 1: Learn the about SDLC Models

SDLCs are the same in their usage. In order to select the right SDLC, you should have the enough experience and be familiar with the SDLCs that will be chosen.

STEP 2: Assess the needs of Stakeholders

We must study the business domain, stakeholders concerns and requirements, business priorities, our technical capability and ability, and technology constraints to be able to choose the right SDLC against their selection criteria.

STEP 3: Define the criteria

Some of the selection criteria or arguments that you may use to select an SDLC are:

  • Is the SDLC suitable for the size of our team and their skills?
  • Is the SDLC suitable with the selected technology we use for implementing the solution?
  • Is the SDLC suitable with client and stakeholders concerns and priorities?
  • Is the SDLC suitable for the geographical situation (distributed team)?
  • Is the SDLC suitable for the size and complexity of our software?
  • Is the SDLC suitable for the type of projects we do?
  • Is the SDLC suitable for our software engineering capability?

What are the criteria?

Here are my recommended criteria, It will be good to share any new criteria you see that it will be valid

Factors Waterfall V-Shaped Evolutionary Prototyping Spiral Iterative and Incremental Agile
Unclear User Requirement Poor Poor Good Excellent Good Excellent
Unfamiliar Technology Poor Poor Excellent Excellent Good Poor
Complex System Good Good Excellent Excellent Good Poor
Reliable system Good Good Poor Excellent Good Good
Short Time Schedule Poor Poor Good Poor Excellent Excellent
Strong Project Management Excellent Excellent Excellent Excellent Excellent Excellent
Cost limitation Poor Poor Poor Poor Excellent Excellent
Visibility of Stakeholders Good Good Excellent Excellent Good Excellent
Skills limitation Good Good Poor Poor Good Poor
Documentations Excellent Excellent Good Good Excellent Poor
Component reusability Excellent Excellent Poor Poor Excellent Poor

STEP 4: Decide

When you define the criteria and the arguments you need to discuss with the team each one, you will need to have a decision matrix and give each criterion a defined weight and score for each option. After analyzing the results, you should document this decision in the project artifacts and share it with the related stakeholders.

References

Software Development Life Cycle Models and Methologies. (2012, 3). Retrieved from melsatar.blog:  Software Development Life Cycle Models and Methodologies

Advertisements

11 thoughts on “Choosing the right Software development life cycle model

  • I have proposed systems in one of my subjects. Inmates Information System and Online Pets Consultation. Based on your recommended criteria, Spiral Model has the highest “Excellent”. Do you also recommend Spiral Model in my two proposed systems? Will be waiting for your response. Have a nice day 🙂

    Like

    • Hi Eufro,
      Yes, may be it has the highest “Excellent” count but it does not mean it is the best choice.
      You may need to give each criteria a different weight, for example, you can give the cost a weight of 50% compared to other criteria based on project situation, context, and constrains. At this case, Spiral model will not be the best option to choose.

      You can explain more about the projects and I can help you in which model can help you.

      Thank you and have a nice day

      Like

      • Thanks for your reply. This is the brief explanation about my two projects.

        Inmates Information System – It’s a system that stores prisoner’s info. From paper-based record keeping to computerized record keeping. It will be easier for the prison officers to access the prisoner’s info, add and update their records.

        Online Pets Consultation – Many pets that live in areas where ready access to routine veterinary care, much less emergency care, isn’t available. With the proposed system, the pet owners will be able to obtain preliminary advice from veterinary professionals online regarding their pet’s condition. Save pet owners
        from the costs of unnecessary travel and can avoid stressful car trips with pets.

        Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s