Web of Science (WoS) is a platform for accessing the world-famous citation database (information on citation of individual articles in more than 18 thousand leading scientific journals). The basis of WoS is formed by a multidisciplinary Core Collection, which includes main citation registers Science Citation Index, Social Sciences Citation Index, Arts & Humanities Citation Index, Conference Proceedings Citation Index and Emerging Sources Citation Index.
In 2018, MU purchased the WoS Citation Connection, which adds additional information resources to the WoS offering: BIOSIS Citation Index (Life Sciences and Biomedical Research), Current Contents Connect, Data Citation Index (Derivative Innovations Index), MEDLINE Zoological Records.
For more information, see https://clarivate.com/webofsciencegroup/solutions/web-of-science/
Educational materials and tutorials for working with Web of Science can be found at WoS Training Portal http://clarivate.libguides.com/home
The quality of journals excerpted in the Web of Science database is measured by the so-called "impact factor" - available in the JCR database - Journal Citation Reports.
Web of Science is a direct competitor to Elsevier's Scopus database in the field of Scientometry.