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You can either purchase them or use a free trial through the manage apps config options.
Details on how to update the licenses: https://confluence.atlassian.com/jirakb/update-license-for-a-3rd-party-app-in-jira-server-429916493.html
Hello Atlassian Community! We’re thrilled to announce some exciting changes to incident management in Jira Service Management Cloud, in order to give your teams extra muscle during incidents, and ...
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