# Design principles In addition to the general design principles from the cost optimization pillar of the Well-Architected Framework whitepaper, the following design principles can assist you to optimize the costs of your telco network infrastructure. + **Measure cost at every layer of the network infrastructure**: The costs to develop, operate, and maintain the network have significant impact on the financial viability of a telco. Therefore, it is important to understand and track the infrastructure costs at each layer - core, distribution, access, edge - so you can identify areas that may require cost optimization. ## See also * **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Well-Architected. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query wellarchitected` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).