In the simplest words that can be described, ASIC design cost far more
than FPGAs. This is one point that all companies working in the field such as Xilinx FPGA development are well aware
of. it is in the nature of programmable silicon chips dictate that no
fabrication costs on lengthy lead times for assemblies are required. Because
the requirements of systems are ever evolving, making incremental changes to FPGA Design Services are far less expensive.