Michael porters, What is Strategy article. a$)$ Write a $($brief$)$ summary of the article by discussing all the sections below, b$)$ Discuss how this article contributed to $($or changed$)$ your understanding of $$strategy$.1-$ Operational effectiveness is not the strategy $2-$ Strategy rests on unique activities $3-$ A sustainable strategic position requires trade$-$offs $4-$ Fit drives both competitive advantage and sustainability $5-$ Rediscovering strategy