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What are you looking to do first?
Add an integration (team-level)
https://operations-help.atlassian.net/l/cp/BWrju7c0 Team-level integrations: Use when you want all the alerts from an integration to go to one particular team.
Site-level integrations: Use when you want to set up dynamic rules to route different alerts to different teams. These are also known as “global” integrations.