Microsoft Corp's (NASDAQ:MSFT) blockbuster fiscal fourth-quarter earnings delivered a potentially important message for ETF investors: the future of enterprise AI may belong to the infrastructure providers rather than any single foundation model.

During the earnings call, CEO Satya Nadella repeatedly emphasized that Microsoft's strategy is centered on giving customers access to multiple AI models — not just OpenAI's GPT models, but also Anthropic, xAI, Mistral and Microsoft's own MAI family.

Azure now offers more than 11,000 AI models, and Microsoft said it has seen a fivefold increase in customers building applications using models from multiple providers.

For ETF investors, that could strengthen the case for funds focused on the AI infrastructure ecosystem.

AI Infrastructure ETFs Could Be the Biggest Beneficiaries The companies supplying the chips, networking equipment and cloud infrastructure required to run multiple AI models stand to benefit regardless of whether enterprises choose OpenAI, Anthropic, xAI or another provider.