@SebastienVZN Thank you for reaching out to Microsoft Q&A, apologize for any inconvenience caused on this.
Based on the shared information, I have understood that you want to send push notification to Android and IOS.
You can refer to the below documentation to send push notifications to specific Android and IOS devices.
- Notification to specific devices using Hubs and Google Firebase cloud messaging.
- Send push notifications to specific iOS devices using Azure Notification Hubs.
You can refer to this Github issue for more details about push notifications for MAUI.
Feel free to reach back to me if you have any further questions on this.