It's possible to share Jira based calendars with the customers and add them to Google Calendar, Outlook and many other applications that support iCalendar format. To do so a user has to go to calendar editing and click "iCalendar Export".
In order to create a new iCalendar export, a user has to click "Add Export" button. A user has to provide an export name and click "Save".
After a link is generated, a user can share it with the people who even do not have access to user's Jira or they can use it in user's Google calendar. In order for a link to be copied to the clipboard, a user can use the relevant 'copy' icon next to the link.
Each export link is unique. To revoke an access from a particular side, a user just has to delete a link that was shared. After the deletion, many programs can still use a previously cached version of the calendar but they will not be able to retrieve new changes.
"Download" button can be used to retrieve file based version that a user can add to programs that support iCalendar format. In this case, it will be a snapshot version and all further changes are not reflected.
Starting version 4.1x, users can export their calendars as embedded calendars to other websites.
The generated code for embedded calendar can be copied by clicking copy icon next to the generated code and then used on a website where the calendar is exported to.
For instance, a calendar can be exported to the Confluence page:
Please note that iCalendar generation is quite heavy operation so the feed returns events that are 3 months before and 1 year after the current date.
Please note that user email visibility has to be set to public in both, Atlassian personal profile and Jira settings. Otherwise, the user email information will not appear in iCalendar feeds.
Please be advised that iCalendar Export is exported with the permissions and settings defined by a user who created Export.
So, when adding new Jira dates based source to a calendar please make sure that Project and Filter are visible for all calendar users.