APQP, or "Advanced Product Quality Planning," is a product-design process developed by automakers in the 1980s. Since then, a large number of businesses have adopted APQP for the product development stage.

A major portion of APQP is devoted to planning the production process, and making the right design decisions at an early enough stage to prevent expensive corrections later. When APQP is carried out correctly, it's a comprehensive and complete process. The foundry will engage the customer on multiple levels to learn everything they can know about the product, its end use and its working environment before finalizing design.

One major factor that sets leading foundries apart from the rest is the product design process. Foundries that follow these five steps are much more likely to produce quality cast parts that function as expected, with low rates of returns and defects. They also frequently delight customers with innovative design suggestions and efficient processes that lead to better parts, lower costs and higher quality.

In the 1980s and 90s, product design procedures were so varied that major American automakers created a set of standard guidelines for their suppliers to follow. These manuals led to the modern practice of "Advanced Product Quality Planning," or APQP.