Optimizely Configured Commerce and Spire CMS - Figuring out Handlers

I recently entered the world of Optimizely Configured Commerce and Spire CMS. Intriguing, interesting and challenging at the same time, especially when my past experience had been with traditional Optimizely CMS and Customized Commerce. The idea is the same, but the implementation is quite different. So yes it becomes a bit daunting, to forget old ways and get used to these new ones. 

But I believe in learning on the job, so figuring things out sort of comes as part of the deal. This time, my challenge lies around figuring out how frontend handlers work in Spire CMS, where code lives, where should I intercept and tweak. Read below for the full story on how I went about this learning.

https://blogs.perficient.com/2025/03/10/optimizely-b2b-commerce-and-spire-cms-figuring-out-handlers/

Hoping to share more such learning as I gain them. :)