Google Analytics is likely to be the most used website analytics tool on the planet. Besides being made by Google, it is completely free and offers a lot of great reports and features we need when tracking our website traffic and marketing goals.
The problem with Google Analytics has always been the delay of data being updated. Sometimes this delay is up to 3 hours and made tracking the performance of our online marketing campaigns more into an afterthought than an on-the-fly analysis. In some cases, we could spend hundreds of dollars on a campaign before we get even the first glimpse that it is actually performing poorly or losing money.