The European Commission (EC) has given the greenlight for Synopsys to acquire Ansys, though the companies must sell-off various software products as part of the proposed remedies.

Chip design software maker Synopsys revealed last January its plans to acquire Ansys, a simulation software developer that helps engineers model and analyze the physical behavior of products, such as chips, and evaluate their real-world performance.

The $35 billion transaction, involving two publicly-traded companies, is the biggest such deal in the technology sector since Broadcom acquired VMware for $69 billion. That merger also attracted regulatory scrutiny, and was finally passed by the EC last July after the parties agreed to commitments around continued access and interoperability.

The crux of the issue, as far as regulators are concerned, is that such a merger would create a comprehensive chip design and simulation giant that could stifle competitors that don’t offer such a combination. And so the EC now ays that the firms will sell overlapping parts of their businesses to a “suitable purchaser” approved by the EC.

Synopsys had already reached an agreement to sell its Optical Solutions Group to Keysight, but now it will also sell its optics and photonics software such as Code V, LightTools, LucidShape, RSoft and ImSym. Ansys will also divest PowerArtist, software that can analyze and optimize the power consumption of electronic circuits at a very granular level.

The U.K Competition and Markets Authority (CMA) launched its own antitrust investigation into Synopsys and Ansys back in August, and earlier this week the CMA indicated that it was willing to accept a similar divestment offer from the companies to approve the deal.

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