If you have upgraded from prior versions of Liferay DXP, you will know that upgrades can be a time-consuming and resource-intensive process. However, from Liferay DXP 7.1 and onwards, we have introduced several features that make things easier. Customers who have upgraded from 6.2 to 7.x can be assured that these changes will make the task of upgrading easier than it was in the past. This paper is a high-level overview of the effort involved in moving from Liferay DXP 7.x to 7.4.
Upgrading from Liferay 7.x to 7.4