Performance indicator is a way to summarize pieces of performance information from available data and measure the progress towards achieving an organization's goals. Key performance indicator (KPI) Key performance indicator is an indicator that provides critical pieces of actionable information to ensure success and evaluates and tracks the key critical performance of an organization. Linked Data Linked data is a pattern of interrelated datasets using Semantic Web techniques, which extends the Web to share information in a way that can be readable by both humans and machines. Linked data enables data from different sources to be interlinked and to become more useful through semantic queries.