PUBLIC MARKS with tags this & development

as well as use hundreds of applications written to Salesforce's Force.com API via the Apex development language. However, this highly proprietary model means customers can run only Salesforce.com (including any customization they have done to the pages they use within the application) on the Salesforce platform.

Instrumentation allows you to determine the running state of a system once it has been deployed. This is crucially important today since the people supporting systems are unlikely to be the same people who developed them. Like good error handling, instrumentation is best done at development time. A sound instrumentation policy must be established at the beginning of the development process to determine what should be instrumented, why, where, and how.