env section is used to define individual environment variables directly. You specify each environment variable by name and value. This method provides precise control over each variable but can be verbose if you have many variables to define.

envFrom section is used to define environment variables in bulk from a ConfigMap or Secret. It’s particularly useful if you want to import all keys from a single ConfigMap or Secret into the container’s environment. However, it lacks the fine-grained control offered by env.

Melisa Tanriverdi

Manage Kubernetes Secrets with External Secrets Operator and AWS SSM