Need for speed: a single way to fix commpression, content writing and accelerate SSL
Google struggled to find a business model until 2003 when it launched its Google AdWords Program. Since that time its Pay Per Click (PPC) advertising model has grown in to a $52B per year business. Google discovered that searches for specific items often led to purchases from vendors that the search results linked to. So instead of charging for impressions, as was the default at the time, Google charged its customers for links that were clicked. Google search has the highest conversion rate and one of the lowest Cost Per Acquisition (CPA) ratios among advertising programs.