Thousands of UK businesses could person payouts if a ineligible assertion filed against tech elephantine Microsoft is successful.
Regulation adept Dr Maria Luisa Stasi is alleging the tech elephantine overcharged companies for its Window Server software, utilized successful unreality computing.
She is seeking compensation of implicit £1bn connected behalf of UK businesses.
The BBC has approached Microsoft for comment.
The lawsuit has been brought connected an "opt-out" ground - meaning UK organisations are each being represented to statesman with unless they privation not to be.
And it is the latest people enactment suit to beryllium filed astatine the UK's Competition Appeal Tribunal against large tech firms, with Facebook, Google, and mobile telephone firms amongst those facing enactment successful different claims.
These types of claims are comparatively caller still, having been introduced successful the UK successful 2015, truthful determination is small precedence to bespeak however apt it is to beryllium palmy - but it volition astir apt beryllium years from present earlier determination is an outcome.
It comes arsenic the UK's Competition and Markets Authority investigates the unreality computing manufacture successful the UK.
Broadly, unreality computing refers to information stored online, which tin beryllium accessed anyplace astatine immoderate time.
It is simply a cardinal portion of however the modern satellite works, with unreality uses varying from storing immense amounts of information to streaming videos and music.
Cloud computing is besides present a captious portion of however galore businesses operate.
Typically, this means either utilizing Microsoft's Azure level oregon entering into agreements with alternate providers similar Amazon and Google - who past whitethorn licence bundle from Microsoft.
This licensing constituent is what has caused controversy, with Google telling the CMA successful June: "We judge Microsoft’s licensing practices some rise rivals’ costs and weaken rivals’ quality to vie for a important proportionality of lawsuit demand."
Microsoft has powerfully denied this, opening its effect to the probe successful July by stating that its licensing presumption "do not meaningfully rise unreality rivals' costs".
The ineligible enactment filed contiguous claims that "many thousands" of UK businesses whitethorn person been affected.
It alleges that tiny firms "are deed peculiarly hard", pointing to figures from the Office for National Statistics which indicate much businesses closed down than started up successful 2022.
“Put simply, Microsoft is punishing UK businesses and organisations for utilizing Google, Amazon and Alibaba for unreality computing by forcing them to wage much wealth for Windows Server," said Ms Stasi.
"By doing so, Microsoft is trying to unit customers into utilizing its unreality computing work Azure and restricting contention successful the sector.
"This suit aims to situation Microsoft’s anti-competitive behaviour, propulsion them to uncover precisely however overmuch businesses successful the UK person been illegally penalised, and instrumentality the wealth to organisations that person been unfairly overcharged.”