You hear a lot about scalability in the web hosting industry. Simply put, having a website that’s scalable means that when your website grows, your hosting company resources grow with you. No longer will a link from popular social news sites like Digg or Reddit take your website down or rack up thousands of dollars in overage fees. Instead, server resources are made available to you on an as-needed basis.
ServerStack.com is a company that successfully scaled a website's infastructure to serve more than 150 million pageviews per day. See how they did it below.