Is SAP BTP going to replace the SAP PI/PO and ALE-IDoc?

Dear Team,

Please let me understand ? Is SAP BTP going to replace the SAP PI/PO adaptors and ALE-IDoc? Is there a direction on what to use when? Is there a training or document available to migrate the existing ALE-IDoc and PI PO adaptors to SAP BTP based interfaces and end points that can be configured from SAP BTP cockpit?

Thanks and regards,

Syam