Verification:- Verification in project management is seen as a quality control process that is used to evaluate whether or not a product, service, or system complies with regulations, specifications, or conditions imposed at the start of a development phase. Verification can occur in development, scale-up, or production. This is often an internally performed assessment process.

Verification is an internal process, thus quality control department checks the product. Verification process is done as part of Quality control.

Verification is actually the acceptance of the deliverables, whereas quality control refers to the correctness of the deliverables. Sometimes, verification and quality control can be done in parallel, but it is more common for quality control to come first

Validation:- Validation is the quality assurance process of establishing evidence or assurance that a product, service, or system will accomplish its intended requirements. This often involves meeting acceptance criteria or fitness for purpose. When providing a list of the project’s requirements, stakeholders and clients may provide product acceptance criteria, which state the criteria and processes for accepting completed deliverables. The acceptance criteria can include information on:

• Target dates
• Functionality

Validation is an external process. In this customer checks the product before accepting. Validation process is done as part of scope validation.

Verification does not necessarily detect incorrect input specifications. Therefore, verification and validation must be performed to ensure that the system or deliverable is operational. After the completion of verification and validation, we often obtain a certificate or written guarantee that the system, component, or deliverable complies with its specified requirements and is acceptable for operation use.