(1) (
Cost
Per
Lead) The cost to an advertiser for each user who registers contact information on a website for some purpose. Also called "cost per action" (CPA). See
pay-per-click,
click-through rate,
CPA and
RPM.
(2) (
Combined
Programming
Language) An extension of ALGOL in the 1960s in the U.K. that was very complex; however, it led to BCPL and then C. See
BCPL and
C.
(3) (
Call
Processing
Language) A telecom standard for configuring call routing and behavior.
(4) (
Compiled
Programming
Language) A programming language for numerical applications. Developed in the 1990s, CPL can extend its own features when compiled. See
numerical application.