You want to reduce noise in your telemetry and exclude internal spans and health checks from being sent to Application Insights.
Which approaches should you implement?
Configure firewall rules to block span export from local hosts.
Use a custom span processor to drop internal spans.
Filter spans in Azure Monitor Analytics query language (KQL).
Use instrumentation-level filtering before export.
Disable telemetry auto-collection in the Application Insights config.
Custom processor and instrumentation filtering are correct ways to prevent span creation/export.