This article discusses lessons learned from piloting social impact bonds.

From original article: "The social impact bond is ultimately a learning tool for a society that is still discovering best practices. If governments already knew the most efficient uses of taxpayer money, they would not need to ask the service provider to find the best solution, as pay-for-success contracts do. And if service providers delivered known or similar outcomes, then delaying payment until we observe performance would be an unnecessary burden.

Therefore, perhaps the largest lesson, and greatest success, of this young innovation has been its ability to anchor the conversation of governments, social entrepreneurs, and impact investors around measurement, metrics, and outcomes."

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