The document summarizes a CrossRef workshop held in Gauteng, South Africa in September 2015. It introduced CrossRef and its role in managing digital object identifiers (DOIs) to uniquely identify scholarly works, enabling linking between references and cited works. It outlined CrossRef's history and services, including DOI registration and metadata deposit, and encouraging long-term archiving of scholarly works. The document also reviewed CrossRef participation benefits and growing statistics on registered DOIs and annual clicks to publisher sites.