I approached problem-solving with unconventional thinking and would like to share an example. We faced a challenge with our percolate Lambda, which was running very slowly due to the large size of the queries and the massive amount of data being transformed and reported. 

To tackle this, I shifted from a conventional approach to an innovative one. I implemented a sink and introduced parallel processing in Lambda, allowing multiple queries to be processed simultaneously. Although this complicated the code, it significantly improved performance.

Previously, we were running 100 queries in separate Lambdas. I changed this to 50 Lambdas, each capable of running four queries at the same time. As a result, we saw a 400% increase in performance and achieved a 200% decrease in costs.

By thinking outside the box and implementing parallel processing, we successfully solved the problem and made significant improvements in both performance and cost.