This document discusses using cloud computing on AWS for grid computing in the financial services industry. It notes that financial modeling has become more complex, requiring more data and scenarios. On-premises grids often cannot meet these demands due to limited capacity. The cloud provides elastic, on-demand compute resources without large upfront hardware investments. AWS services like EC2, FSx, and Batch allow building scalable HPC clusters that can quickly scale up and down based on demand. Partners like Accenture help financial firms use AWS to perform risk calculations and meet regulatory requirements more cost effectively.