Consider the following example of TAS metrics.

Both the time to execute automated tests and the speed and efficiency of TAS components are considered internal TAS metrics. Internal metrics are those that relate directly to the performance and effectiveness of the Test Automation System (TAS) itself, rather than its impact on external processes or outcomes. The time to execute automated tests measures how long the TAS takes to run a set of tests, which is a key factor in assessing the efficiency and performance of the automation. Similarly, the speed and efficiency of TAS components are directly related to how well the internal parts of the TAS are functioning. These metrics are crucial for understanding and improving the internal workings of the TAS, making them both internal metrics.