Illumina, Inc. is engaged in the development, manufacturing and marketing of life science tools and integrated systems for large-scale genetic variation and functional analysis. It operates through the CoreIllumina division, which serves customers in the research, clinical and applied markets, and enables a variety of genomic solutions to be adopted. The company's products include instruments, reagent kits and reagents, selection tools, as well as software and analysis. Its services include sequencing and microarray services, proactive instrument monitoring, instrument services, training and consulting. The company was founded in April 1998 by David R. Walt, John R. Stuelpnagel, Anthony W. Czarnik, Lawrence A. Bock, and Mark S. Chee and is headquartered in San Diego, California.