In terms of organizational structure, the key feature of an ambidextrous organization that supports innovation initiatives is:1 pointDecentralized product development teamsCorporate funding for spinouts and new venturesMultiple semi-autonomous small unitsAll of the above

The key feature of an ambidextrous organization that supports innovation initiatives is "Multiple semi-autonomous small units". Here's a step-by-step explanation:

1. Ambidextrous Organization: An ambidextrous organization is one that is able to exploit existing competencies and explore new opportunities simultaneously. This requires a balance between efficiency in current operations and innovation for the future.

2. Semi-Autonomous Units: In an ambidextrous organization, innovation is often driven by multiple semi-autonomous small units. These units have the freedom to experiment and innovate, while still being connected to the larger organization. They can operate with different processes, structures, and cultures that are more conducive to innovation.

3. Decentralized Product Development Teams: While decentralized product development teams can support innovation, they are not the key feature of an ambidextrous organization. These teams can exist in any type of organization, not just ambidextrous ones.

4. Corporate Funding for Spinouts and New Ventures: While corporate funding can support innovation, it's not the key feature of an ambidextrous organization. Funding is a resource that supports innovation, but it doesn't define the organizational structure.

So, in terms of organizational structure, the key feature of an ambidextrous organization that supports innovation initiatives is multiple semi-autonomous small units. These units provide the flexibility and autonomy needed for innovation, while still being aligned with the overall strategy and goals of the organization.