Liferay Push and Mobile SDK replacement in 7.4

Issue

We have a mobile app created using mobile SDK in Liferay DXP 7.0 and we want to know how to port it to DXP 7.4.
Is Liferay Push available for Liferay DXP 7.4?

Liferay Push has been deprecated since Liferay DXP 7.3.
There is no out of the box module available for DXP 7.4 with the same functionalities as Liferay Push.
Although Liferay Push is not bundled in Liferay DXP, the source code is still present in the repository https://github.com/liferay/liferay-portal/tree/master/modules/apps/push-notification
- Bear in mind that any bug related to that module is not covered under support because it's deprecated/removed.
A possible workaround is to create a custom module for generating push notifications.
- See this talk explaining how to extend notifications to send notifications via WhatAapp with a custom module: Liferay Notifications - Creating a custom notification type (/dev/24 2022).

Mobile SDK is deprecated in DXP 7.4 too.
The alternative for creating mobile apps for DXP 7.4 is creating native apps and using Liferay DXP Headless API's to interact with Liferay DXP.