Utilizing Azure Elastic Load Balancing and Azure Auto-scaling to dynamically adjust resources based on demand, alongside deploying the platform across multiple Azure regions with data encrypted both at rest and in transit to ensure GDPR compliance.

Deploying the platform in a single Azure region with static resource allocation and manual scaling to keep costs low, despite potential performance and availability issues during peak times.

Focusing exclusively on cost reduction by selecting Azure services with limited resource options and no auto-scaling capabilities, disregarding the need for high availability and GDPR compliance.

Implementing multi-region deployments in Azure with geo-redundancy for high availability, leveraging Azure Auto-scaling for scalability, and utilizing Azure's built-in data protection features to ensure GDPR compliance.

Combining the use of Azure Elastic Load Balancing and Azure Auto-scaling with multi-region deployments and data encryption for GDPR compliance, alongside Azure's cost management tools to optimize expenses without compromising on performance or compliance.