What is the main contribution of the article which builds on existing literature

What is the main contribution of the article which builds on existing literature by identifying
an important research gap?
2. What is the methodological approach used (intuitively and not the technical aspects)?
3. How does this research provide substantive strategic insights to managers?
4. What are the potential shortcomings of the article and how can future research overcome
them?
Requirements: 3 pages for each article, same questions