Introduces practical SIMD programming in C++ and C#, covering SSE and AVX concepts, data layout, lanes, intrinsics, conditional code, memory alignment, and performance optimization. The supplemental tutorial for INFOB3CC, INFOMOV, and INFOMAGR demonstrates vectorization through Mandelbrot rendering and reports C# frame time improving from 182 ms to 29 ms; authored by Jacco Bikker on August 4, 2017.