This document discusses the concept of a complete quantitative and algorithmic trading ecosystem called the "Trading-Atrium". It describes the Trading-Atrium as comprising seven core components - algorithmic/quantitative trading applications, advanced hardware, ultra-low latency networks, exchanges and liquidity pools, multi-asset brokers, professional services, and academic services. It notes there are implications to consider for each component and how bringing them together in an integrated ecosystem can create a value greater than the sum of the individual parts. The goal of the Trading-Atrium is to empower traders through innovation and sophistication.