# Backend

- [How to use the transactional response token to debug a transactional API call?](/developer/technical-guides/how-to-guides/backend/how-to-use-the-transactional-response-token-to-debug-a-transactional-api-call.md): Here is what you need to do when you want to check the effective sending time of a transactional push compared to the API call time.
- [How to connect Batch to my CMS?](/developer/technical-guides/how-to-guides/backend/how-to-connect-batch-to-my-cms.md): Connecting Batch to a CMS to send push notifications is straightforward. You can use our Campaigns API.
- [How to send a silent push notification?](/developer/technical-guides/how-to-guides/backend/how-to-send-a-silent-push-notification.md): You will find here all you need to know to send your first silent push notification to your user.