10 Lessons From Migrating to SPIFFE After 10 Years Of Service Identity at Square (Square) Mat describes the principal benefits of migrating from a homegrown service identity issuer to SPIFFE, showing what the team learned in this process. Presented by Mat Byczkowski at SPIFFE Production Identity Day, KubeCon NA 2020 on 17-Nov-2020. Passport App: The role of SPIFFE and SPIRE in a return to work solution (doc.