What is the difference between validation, verification and accreditation?

Validation, verification, and accreditation are three different but related terms often used in the field of quality assurance and compliance. Let's break them down:

Validation: This is the process where we check if a system or method is good for its intended use. In other words, it's where we confirm that the thing we've planned to do is fit for purpose.

Verification: This is when we review and confirm that a system or method is doing what it's supposed to do based on certain requirements or standards. It's like a check-up to ensure the thing we're doing is working as designed.

Accreditation: This is when an independent body gives approval to an organization or person to carry out certain activities. This approval is given only after checking that the organization meets established standards and is qualified to take part in a specific program or market.

So, in simple terms, validation makes sure a system is good to use, verification confirms that the system is doing what it should do, and accreditation gives an organization the green light to carry out certain tasks or activities.