abstract:IPL (Interoperable PDK Libraries) is an industry alliance established in April 2007 to collaborate on the creation and promotion of interoperable Process Design Kit (PDK) standards. Since its inception, the IPL Alliance has released a proof-of-concept interoperable PCell library, demonstrated interoperability among tools from multiple vendors, and expanded its charter to address broader interoperability issues with foundry Process Design Kit (PDKs) and design flows.