One or more techniques or systems for incorporating a common template into a system on chip (SOC) design are provided herein. For example, a common template mask set is generated based on a first set of polygon positions from a first vendor and a second set of polygon positions from a second vendor. A third party creates a third party SOC design using a set of design rules generated based on the common template mask set. The common template is fabricated based on the third party SOC design using the common template mask set. Because the common template is formed using the common template mask set and because the common template mask set is based on polygon positions from both the first vendor and the second vendor, a part can be connected to the SOC regardless of whether the part is sourced from the first vendor or the second vendor.