What does the IOD/IOV programme actually pay for?

Three things: aggregating your hardware onto a host spacecraft (including via rideshare), the launch itself, and up to one year of in-orbit operations including data provision. The point is to get a technology from ground-tested to flight-proven without you having to buy or build a whole satellite mission yourself.

Who can apply, and how?

Academia, research organisations, SMEs and larger industrial companies are all eligible. Access runs through recurring Expression of Interest calls — two a year, through March 2027 — that pre-select experiments needing aggregation and 'ready to fly' satellites, with the resulting procurement published on ESA-Star.

What is IOD/IOV?

IOD/IOV (In-Orbit Demonstration and Validation) is the European Union's programme, managed by ESA on behalf of the European Commission, for getting a company's hardware into orbit specifically to prove it works there — covering aggregation onto a host spacecraft, the launch itself, and up to one year of in-orbit operations. It exists because no amount of ground testing satisfies a customer who wants to see TRL 9: actual flight heritage.

What it actually funds

Three services, per the European Commission: aggregation (fitting an experiment onto a host spacecraft, including via rideshare), launch services for aggregated missions and "Ready to Fly" satellites, and up to one year of operations including data provision. Since early 2025 a rideshare route runs alongside the classic dedicated-spacecraft route — six providers (Aerospacelab, Berlin Space Technologies, D-Orbit, ISISPACE, LuxSpace and Open Cosmos) hold frame contracts to fly IOD/IOV experiments on their existing commercial missions, cutting the time between selection and launch. Through the programme, ESA and the Commission state they have already backed 10 satellites, 2 proof-of-concept missions and more than 30 individual technologies.

Who it's for

Eligibility spans academia, research organisations, SMEs and larger industrial companies. Access runs through recurring Expression of Interest calls — two per year, running from March 2023 through March 2027 — that pre-select experiments needing aggregation and "ready to fly" satellites; the resulting procurement is published on ESA-Star, alongside everything else VIRA tracks: see live tenders.

Why flight heritage matters for funding

TRL 7-9 is the stretch of the ladder that ground testing alone can't close: TRL 7 means the system has been demonstrated in the actual operating environment, TRL 8 means it is built and "flight qualified", and TRL 9 means it has flown and been "flight proven" during a real mission. For a founder, IOD/IOV is the mechanism that turns "we tested this in a thermal-vacuum chamber" into "this flew and returned data" — the sentence that unlocks the next investor conversation, the next customer contract, or a grant application pitched at a higher TRL floor. It is a natural next step after de-risking hardware through ESA GSTP's Fly element, sitting inside the wider EU Space Programme's research and innovation effort.

Official source: In-Orbit Demonstration and Validation (IOD/IOV) — Defence Industry and Space, European Commission; Rideshare deal opens new path to space for European innovation — ESA.

Written by Tymofiy Badikov, founder of VIRA.space (Virtual Innovation Research Assistant) — operated by Space Tech Gateway Sp. z o.o., Kraków Technology Park. VIRA tracks live European space funding calls and checks your eligibility free: see live tenders.