The following table provides a summary of Container-Optimized OS releases available on Compute Engine:

Active Milestones

OS version Image project Image family Built by Deprecation date Release notes
COS 85 LTS cos-cloud cos-85-lts Google December 2021 milestone 85
COS 81 LTS cos-cloud cos-81-lts Google June 2021 milestone 81
COS 77 LTS cos-cloud cos-77-lts Google December 2020 milestone 77

Past Milestones

OS version Image project Image family Built by Deprecation date Release Notes
COS 73 LTS cos-cloud cos-73-lts Google June 2020 milestone 73
COS 69 LTS cos-cloud cos-69-lts Google December 2019 milestone 69