Taking decisions requires the ability to govern a huge amount of information that often spans different domains and competences. Most of the relevant data encoding such information are collected by organisations that store them in local databases using different formats and conceptual models. Therefore it is very hard to access them and make sense of them in an integrated perspective. The open data initiative has led many organisations to publish their data, which mitigates to some extent the difficulty in having access to it. Nevertheless, the integration problem still holds and decision makers struggle in taking advantage of it. A way to address this problem is to be aware and possibly be able to use a number of technologies and methods that allow to integrate and interlink such data into “knowledge graphs”. Knowledge graphs are the backbone of data integration, data analytics and business intelligence. For a decision maker, knowing the methods and technologies that support the creation, maintenance and reasoning over knowledge graphs is key to drive public and private administrations towards a better strategic governance.