Advances in genomic technologies are enabling the generation and integration of transcriptomic, epigenomic, proteomic, and other molecular data sets at an unprecedented scale. To gain a more complete view of biology, scientists are increasingly turning to a multiomic approach that integrates multiple omic methods. This eBook introduces core concepts in multiomics and highlights examples from current research that illustrate how integrated molecular data can reveal deeper biological insights and more complete views of development, health, and disease.