We score performance in tests to create an index value. The Aggregated Index Value (AIV) is the sum of the test results. This gives us a way to compare performance by using relative AIV. It’s these relative values – between years, sectors, or clusters – that this page shows. A higher AIV represents greater capability and performance. Our benchmarking suggests that Top500 performance has markedly improved in most areas in recent years.
Figure 7. Average performance by Top500 cluster
This chart shows how much better the average retailers in the top clusters perform, compared to those in the bottom cluster