what is the role of JIT and Lean in Inventory Management?

“We want to turn our inventory faster than our people”
James Sinegal Read
The following link leads to an article from The Wall Street Journal.
https://www.wsj.com/articles/retailers-rethink-inventory-strategies-1467062280
Please provide your answer to the following questions:
Inventory Management represents the backbone of Retailer. What is Home Depot Strategy to grow sales while maintaining the same level of inventory?
What’s the role of Technology in better managing inventory? Provide three concrete points.
In your opinion, what is the role of JIT and Lean in Inventory Management?
While developing your answers:
Provide concrete articulation to your arguments.
Perform an additional Internet research about the topic.