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Ahrefs is a multinational team with headquarters in Singapore and Ukraine. It is a lean start-up company. It attaches importance to making meaningful and easy-to-use products. It changes things quickly, gives customers the most important thing and keeps it ahead. Its motto is "do it first, then do it right, then do it better." The history of Ahrefs can be traced back to 2011, when the first version of site resource manager was launched after a year of preparation and data mining. The website resource manager has broken the stagnant field of reverse link analysis and has triggered a new round of competition among search engine optimization tool providers. It started from a cluster of six servers and gradually developed into the current powerful 60tb flops system. Today, it updates its index every 15 minutes with the freshest backlinks on the network. Crawlers process up to 5 billion pages a day.