Splunk, creators of the IT Search engine for logs and IT data, has closed USD25 million in Series C funding led by Ignition Partners of Bellevue, Washington. Also participating in the round were the company's existing investors August Capital, JK&B Capital and Sevin Rosen Funds. Splunk's free download business model has put the company on a rapid growth trajectory. The funding will be used to continue Splunk's adoption in data centres around the world. Customers include Visa International, Verizon Business and The U.S. Department of Justice who use Splunk's IT Search. This funding round follows Series A investment of USD5 million in December 2004 from August Capital and Sevin Rosen, and USD10 million Series B in January 2006 led by JK&B Capital.