Hardware prototyping and emulation have been two sides of the same coin ever since the FPGA became a commercial success. Early emulators were all built from FPGAs, and most were used in-circuit, much like prototypes are today.
More recently, emulation has become a major piece of the verification flow, to the point where most emulators now use custom chips to power them. At the same time, there has been much less advancement in prototyping. This article from Semiengineering describes what will it take to make hardware prototyping as ubiquitous as emulation.
Find out how T&VS Hardware Emulation services allow verifying the robustness of a design and helps optimize the design for improved performance.