Advantages of FPGA

The main advantage of FPGA is that high speed and parallel processing can be easily implemented.Industrial embedded systems typically require high I/O counts, making parallel IP blocks in FPGA fabric well-suited for managing analog, digital, and communications interrupts that would otherwise bog down an embedded processor. For example, in Telecom, Video processing, Digital Signal processing, High speed Real-Time processing, fixed processing logic can be implemented in Hardware through FPGA.

Then, other advantages such as:
www.men.de/docs-ext/expertise/pdf/fpga_advantages.pdf
www.canterbury-consulting.co.uk/.../fpga.../56-advantages-of-fpga-devices