W-model

                             W-Model 

W-Model accession attempts to address and gear the shortcomings of V-Model. Unlike the V-Model, which focuses on exact dynamic test stages, 

• W-Model pays adequate attention on the upshot of products themselves.
•  Moreover, it represents one-to-one relationship between the archives represented on the left side of the W and the tests represented on the right side of the W. 

Advantages :

• Testing can run parallel with each development phase 
• Developer have a responsibility to remove the errors and defects from the project .

Disadvantage :

• Complex : It's difficult to implement it .
• Resource Allocation : In most of the cases it do not full fill the resources where it require 
• Weightage : Testing have equal weightage as development process have.