Quality Control (QC) is a process-oriented approach to ensuring that products or services meet established quality standards and customer requirements. QC involves monitoring and inspecting production processes, materials, and finished goods to identify defects, deviations, or non-conformities. It aims to prevent quality issues, improve efficiency, and enhance customer satisfaction by delivering consistent, reliable, and high-quality products or services.

A Quick Response (QR) Code is a two-dimensional barcode that contains information encoded in a pattern of black squares arranged on a white background. QR codes are widely used for various applications, including product packaging, marketing materials, event tickets, and mobile payments. By scanning QR codes with a smartphone or other device, users can quickly access websites, information, or perform actions such as making payments or sharing contact details.

Quid Pro Quo is a Latin term that translates to “something for something” and refers to a reciprocal exchange or mutual agreement in which one party provides something of value or benefit in exchange for something else of value or benefit from another party. Quid pro quo arrangements are common in business, politics, and interpersonal relationships, where parties engage in transactions, negotiations, or agreements based on mutual interests, concessions, or considerations.