Verification: process of evaluating steps which is followed up to development phase to determine whether they meet the specified requirements for that stage.

Validation: process of evaluating product during or at the end of the development process to determine whether product meets specified requirements.

Difference between Verification and Validation:

☛ Verification is Static Testing where as Validations is Dynamic Testing.

☛ Verification takes place before validation.

☛ Verification evaluates plans, documents, requirements and specifications, where as Validation evaluates product.

☛ Verification inputs are checklist, issues list, walkthroughs and inspection, where as in Validation testing of actual product.

☛ Verification output is set of documents, plans, specifications and requirement documents where as in Validation actual product is output.