There are many good articles on practical use cases of AI. Find links to few of the beautiful articles.

HBR

Artificial Intelligence for the Real World
by Thomas H. Davenport and Rajeev Ronanki
From Jan–Feb 2018 Issue

FORBES

The Top 10 AI And Machine Learning Use Cases Everyone Should Know About
Bernard Marr

MEDIUM

Artificial Intelligence (AI) — Top Use Cases and Technologies Used Today


Brian Johnson

DEVPRO JOURNAL

Top AI Use Cases in 2020

Bernadette Wilson