Key Performance Indicators (KPIs) are increasingly requested by a diverse range of stakeholders across the research ecosystem. Funders want to measure the impact of projects and related services they fund, or research organisations want to track the service use for informed decision making. Service providers themselves are also interested in monitoring their services to gather feedback and improve service quality. KPIs are a simple, but powerful tool for these purposes.As part of the BioHackathon Europe 2025, we report on the activities of the METRICS project, which addresses the need for consistent and transparent evaluation of services across ELIXIR and related initiatives using KPIs. The project brings together experts from multiple ELIXIR Nodes and scientific domains to identify, harmonise, and semantically model KPIs that reflect service quality, usage, sustainability, and impact. By exploring existing evaluation frameworks, and processes, the team aims to design a flexible yet coherent foundation for KPI monitoring of ELIXIR services. This report summarises the project’s motivation, current landscape analysis, and initial steps toward developing an ontology-driven framework for KPI representation, fostering interoperability and supporting evidence-based management of life science infrastructures.