Introduced in 1964, Diet Pepsi was the United States's first national diet soft drink.
In 1975 Pepsi introduced the Pepsi Challenge. This was a marketing campaign were they would set up a blind tasting between their product and that of their arch-rival Coca-Cola. The Pepsi Challenge and the Pepsi advertising blitz were clearly having an effect with more and more people switching from Coca-Cola to Pepsi. As a result Coca-Cola made the decision to change their formula to taste more like Pepsi. Of coarse Pepsi took advantage of this situation and really had a field day making fun of Coca-Cola. After switching back to their original formula, Coca-Cola and Pepsi would continue to battle it out for supremacy in the Cola wars.
Pepsi also moved into other beverage catagories by working out deals with Lipton, Ocean Spray, and Starbucks. Pepsi has continued to expand globaly throughout the years until practically every nation on the face of the earth either has a bottling plant of their own, or can at least buy a bottle of Pepsi. By 1993, Pepsi-Cola profits had surpassed $1 billion, and in 1998 Pepsi celebrated its 100th anniversary.