Enterprise AI is no longer a pilot initiative—it is core infrastructure. With global AI spending projected at $2.5 trillion in 2026 and Gartner forecasting that 40% of enterprise applications will embed AI agents by year-end, CIOs and CTOs face a decisive inflection point: architect an intentional, governed multi-platform AI strategy or risk fragmented adoption that erodes competitive advantage. This report provides an analytical framework for platform selection, financial mo