What are the key differences between the Helm chart based installation and Operator based installation methods? 

Answer

Both the Helm and Operator YAML deployment methods install the same Instana Agent Operator and result in identical runtime behavior, permissions, and cluster footprint. There are no functional or RBAC differences between the two approaches.

The choice between Helm and raw YAML is strictly an operational decision. The Operator YAML method provides a simple, static deployment model with manual lifecycle management, suited for environments with minimal tooling or GitOps workflows based on raw manifests. The Helm-based approach offers structured lifecycle management, including upgrades, rollbacks, revision history, and values-based configuration, making it better suited for production environments and teams standardizing on Helm.

In short, Helm is recommended for production and scale, while Operator YAML is appropriate for simpler or tooling-constrained environments. The decision should be driven by lifecycle, upgrade, and operational governance requirements—not by differences in functionality or security.