The document compares several analytical methodologies for performing online advertising campaign analysis on a 2 billion+ impression log file with 350 million unique users. It finds that: 1) iQO delivered the fastest and most uniform performance, with most queries returning in less than 5 seconds. 2) Hadoop and Aster had median response times of several hours, though still 3-4 times faster than relational databases. 3) iQO was the only approach that was able to scale to petabyte volumes and answer 100% of queries, while other approaches like Hadoop would require unwieldy hardware at that scale.