Management hierarchy: strategic, managerial and operational.

 Hello, i need two different posts(responses) with 200 words each on the below topic. 

There are three levels of management hierarchy: strategic, managerial and operational. Part 1: Review at least 4 academically reviewed articles on each management hierarchy. Summary the articles in your own words.Part 2: Discuss how the three levels of management hierarchy: strategic, management, and operational relates to the mission of a business.Part 3: As an IT professional, how would you use information technology to improve the efficiency the three levels of management hierarchy?

Please use API through out and avoid plagiarism.