The Leading International Conference for Software Architecture. The next virtual edition of the iSAQB Software Architecture Gathering (SAG) will take place October 11-14, 2021. For several years, the SAG has provided unparalleled information that software architects and aspiring software architects need to succeed in their roles. It also provides a forum to network and hear what other professionals have learned in real-world experiences. A selection of the best-known international experts will share their practical knowledge on the most important topics in state-of-the-art software architecture. The SAG is presented by the International Software Architecture Qualification Board (iSAQB®) in cooperation with Skills Matter.