This document provides information about test automation strategies and calculating return on investment (ROI) for test automation. It discusses the test pyramid approach, with unit tests at the base comprising the largest percentage (around 70-80%) and user interface tests at the top comprising the smallest percentage (around 1-5%). It also discusses factors to consider for ROI calculations, such as effort required for manual vs automated testing, and when the investment in automation will pay off. Sources of information on these topics are provided. The document aims to help understand how to apply test automation strategies and ROI calculations for a specific project context.