Spiral Model

Question 1

What does the model look like?

Answer 1

The model is a spiral that will go through a whole phase and start back over improving from the end of the last phase and will carry on in a cycle.

Question 2

What are the advantages of this model?

Answer 2

• can adapt to changing requirements and demands from the customer
• customer gets to see the system early
• allows extensive use of prototypes

Question 3

What are the disadvantages of this model?

Answer 3

• End of project may not be known early
• spiral can go on indefinitely
• more complex to manage

Question 4

When to use this model?

Answer 4

Use can use this model if you have a restraint on the amount of resources, the requirements are complex, the project can change a lot through out development and to be able to release products early to get feedback.