Help

Please don't forget to do two versions, one for me and one for my friend 

Among the three generic business strategies, low cost strategy, differentation strategy and integrated low cost/differentiation strategy, which one is the "winner formula" that will give firms largest competitive advantage? Which one do you think the most difficult to pursue? why?

Here are some links to help 
and please check the attachement. The professor don't want to tangible resources "" 
100 words each 

https://www.cnbc.com/2017/01/15/ikeas-strategy-stick-to-the-retail-basics-and-expand-in-the-us.html

https://brandongaille.com/ikea-business-model-and-marketing-strategy/