Expression is a string where tokens (values written within curly braces) are replaced with their expected value.
"{SiteUrl}/InboundInvoices" (expression within configuration) -> "/sites/Invoices/InboundInvoices" (resolved value used at runtime) Copy
"{SiteUrl}/InboundInvoices" (expression within configuration) -> "/sites/Invoices/InboundInvoices" (resolved value used at runtime)
Expression is a string where tokens (values written within curly braces) are replaced with their expected value.