1.Verification:
"Are we building the product right“
The product should conform to its specification
Verification is the process of evaluating a system or component to determine whether the products of a given development phase satisfy the conditions imposed at the start of that phase.
system
2.Validation:
"Are we building the right product“
The product should do what the user really requires
Validation is the process of evaluating a system or component during or at the end of the development process to determine whether it satisfies specified requirements.