"Having looked at the Aptimize Web site (I unfortunately was not able to attend Velocity this year), it seems to do many of the things in a single package that Steve Souders recommends sites do to improve measured performance. However, as the above post notes, Aptimize is simply another in a long line of tools designed to fix the technical problem of poor Web performance. If Web performance is being examined after a site has been released, the question of how the site got out the door in the first place becomes even more important." - Stephen Pierzchala