Final answer:
The best choice for migrating a mission-critical Oracle E-Biz application to OCI with full control over the infrastructure is Oracle Cloud Infrastructure Bare Metal. This service provides full visibility, control, and access, which other options listed do not offer.
Step-by-step explanation:
If you wish to migrate a mission-critical Oracle E-Biz application to OCI and require full control and access to the underlying infrastructure, the best option would be Oracle Cloud Infrastructure Bare Metal. This service allows you full visibility, control, and access to your infrastructure just as if it were in your own data center. Of all the options listed, only Oracle Cloud Infrastructure Bare Metal gives you such control. The other services like Oracle Cloud Infrastructure Functions, Oracle Cloud Infrastructure Autonomous Database, and Oracle Cloud Infrastructure Classic are geared towards other specific functionalities and don't offer the same level of underlying infrastructure control.
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