currently we are using Jira service desk data center 4.5.2 version and OS Linux 3.10.0-957.el7.x86_64 and DB postgres72. we are planning to upgrade latest Enterprise version and might require your assistance and please provide upgrade steps and supported platforms.
Start reading at https://confluence.atlassian.com/jiracore/upgrading-jira-data-center-976167016.html
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