For migrating applications between Kubernetes clusters---specifically from Google Kubernetes Engine (GKE) to Azure Kubernetes Service (AKS)---and ensuring that all components and data are moved in an application-aware manner, the best product to use is Astra Control Service. Here's why:

Application-Aware Migration: Astra Control Service is designed to manage, protect, and move applications in Kubernetes environments. It understands the structure of Kubernetes applications and can manage the entire lifecycle, including migration of application data along with its configuration and state.

Cross-Platform Capability: Astra Control Service supports multiple Kubernetes platforms, making it suitable for migrations from GKE to AKS. It ensures that all parts of the Kubernetes application, including persistent volumes and configurations, are consistently replicated to the new environment.

Seamless Migration Process: The service automates much of the migration process, reducing the complexity and potential for error when moving applications between different cloud providers or Kubernetes services.

For more detailed guidance on using Astra Control Service for Kubernetes migrations, refer to the NetApp documentation: NetApp Astra Control Service Documentation.