What is the name of this skyscraper? Why is it important?

What do you notice about the design of this building? Who designed this structure?

Completed in 2009, the Burj Khalifa, in Dubai (United Arab Emirates), is currently the tallest skyscraper in the world, with a height of 829.8 metres (2,722 ft). Because, being the tallest structure in the world, it is also the tallest building. it has green red and white color on the building Search Results

Burj Khalifa/Architecture firm

Skidmore, Owings & Merrill