Which deployment option offers the highest level of control over the infrastructure for Dynamics 365?

On-premises deployment offers the highest level of control over the infrastructure for Dynamics 365 because it allows organizations to manage their own hardware, software, and network configurations. This form of deployment gives businesses the flexibility to customize their environment according to specific needs, have full control over data security and compliance regulations, and make tailored adjustments to performance and scaling based on their operational requirements.

In an on-premises setup, the organization is responsible for maintaining the servers, applying updates, and managing backups, which can be advantageous for companies with specialized requirements or those operating in highly regulated industries. This deployment model contrasts with cloud-based options, where the service provider manages all aspects of the infrastructure, and hybrid deployments, which blend on-premises and cloud resources, potentially introducing complexities and varying levels of control. Multi-tenant SaaS deployments further limit infrastructure control as they are designed to serve multiple customers simultaneously, sharing resources in a way that can restrict customization options.