Hooks are the most powerful plugin provided by liferay which can be used for customizing Liferay’s core features.
We can definitely use EXT plugin which can be achieved by Hook plugin but for best practices, we should use hook plugin as it is hot-deployable and also easy for upgradation/migration process.
Creating hook - https://www.liferay.com/documentation/liferay-portal/6.2/development/-/ai/creating-a-hook-liferay-portal-6-2-dev-guide-10-en
Before you start actual development, you should know whether to use Hook or EXT.
