Difference between traditional and Agile development

Difference between traditional and Agile development :

New Series started form this month: Agile QA

Agile QA:

Agile methodology is an adaptive methodology, its people oriented. 

It helps us to increase productivity and reduce risks. 

There are 2 popular agile methods- Extreme programming (XP) and Scrum.

Characteristics of the Agile methodology: 

1. Frequent Delivery  2. More Iterations  3. Test frequently  4. Less defects

Brief about SCRUM and XP : 
Scrum: Each iteration would called a scrum which can be a 1- 2 Months.
In Scrum Client prioritise his requirements what  he want first. 
If developer did not meets all the  requirement which was being fixed for a 
perticular scrum  than rest of the development part would be transferred to  
the next scrum (would be delievered in the next build),   
means developer cann't increase time decided for a scrum. Its fixed.  

Extreme Programming (XP): here iteration period would be
less then in scrum, which is being 2-4 weeks. 
Here developer priorities what to do first on the basis of  
client requirement. This duration which was being fixed for a iteration, 
can be increase if the some development part is still pending. 
The build would deployed with having all the client needs.
Thus iteration period is not fixed here it can be increase but iteration
should meets all the client's requirement in  this build. 
More attension is required for testing in XP.