In what cases and at what stages are changes usually made to Helm charts?

Changes in Helm charts are usually made at the following stages:

• Application or service development: when a new service is created or its configuration is changed, corresponding Helm charts are created or updated.
• Testing and debugging: to adjust deployment parameters, fix template errors, or add new resources.
• Pre-release: to configure environment parameters, secrets, resources, and other production-specific settings.
• Support and updates: when requirements change, dependency versions are updated, new features are added, or bugs are fixed.

Thus, changes in Helm charts occur at all stages of the application lifecycle, from development to production support.