What it means
These services can operate at network, transport, application, regional, or global layers. Their security and reliability depend on health-check quality, termination points, session state, scaling limits, permissions, and protection of back-end services.
Why it matters
Automated distribution and scaling can absorb normal demand changes, but bad signals or unsafe configuration can amplify failures and cost.
Practical focus
- Use health checks that reflect actual service readiness
- Set minimum, maximum, and cooldown behavior deliberately
- Protect back ends from bypassing the load balancer
- Test scaling during deployment, failure, and sudden demand
Common mistakes
- Scaling only on average CPU
- Using shallow health checks
- Allowing unlimited scaling without budget or quota safeguards
- Terminating encryption without protecting internal traffic where required
Certification relevance
This subject appears in or supports the following certification bodies of knowledge: