Symposium on Operating Systems Principles
The Symposium on Operating Systems Principles (SOSP), organized by the Association for Computing Machinery (ACM), is one of the most prestigious single-track academic conferences on operating systems. Before 2023, SOSP was held every other year, alternating with the conference on Operating Systems Design and Implementation (OSDI); starting 2024, SOSP began to be held every year.
Source: Wikipedia — Symposium on Operating Systems Principles (CC BY-SA 4.0)