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Amazon has jumped into sustainable investing with the launch of its Climate Pledge Fund. Seeded with $2 billion from Amazon itself, the fund aims to "accelerate investment in innovations for the zero carbon economy of the future," the company says. To do that, the fund will invest in companies that produce services and technologies that help other companies — including, actually, Amazon — meet their goal of becoming net-zero carbon.

The companies the fund invests in will be across all sizes and stages, from startups to established businesses, across multiple industries that could include transportation and logistics, energy generation, storage and utilization, manufacturing and materials, and food and agriculture.

The fund will be led Matt Peterson, Amazon's director of corporate development new initiatives and Amazon's corporate sustainability officer, Kara Hurst, according to an update by TechCrunch that cited a company spokesperson.