A settlement is not a foregone conclusion, however.
Google is now testing the impact that its changes will have when introduced, and the Commission and competitors such as Microsoft and Yelp will have the opportunity to respond.
Alumunia will then decide whether to continue working on a settlement, which he said would come in early 2014, or to make formal objections, which would likely mark the beginning of a lengthy court battle and possible fines for Google.
Microsoft paid around 2.2 billion euros (currently $3 billion) in fines during a decade of conflict with the Commission over abuses of its market dominance many of which now appear irrelevant, given the fast pace of technological change.
Thomas Vinje, Legal Counsel and Spokesman for FairSearch Europe, an umbrella group of companies lobbying against Google that includes Microsoft and Oracle, said it was difficult to comment until the full details of the Google proposal were known.
"It is essential...that Google applies the same rules to its own services as it does to others when it returns and displays search results," he said in an email.
He said he hoped the Commission will give competitors a chance to examine Google's proposal thoroughly so they can conduct their own assessments of what the market impact will be.
From the start of his appointment, Almunia has said he prefers negotiation rather than lengthy court battles and fines.
"(My job is about) consumer welfare, innovation and choice, not about protecting competitors," Almunia said Tuesday. He said consumers deserve having choice in online search and advertising "now, and not after many years of litigation."
Google lawyer Kent Walker said while the company thinks its system is already fair, the Commission had "insisted on further, significant changes to the way we display search results."
"While competition online is thriving, we've made the difficult decision to agree to their requirements in the interests of reaching a settlement," he said.
Earlier this year, the U.S. Federal Trade Commission closed an investigation into Google after the company agreed to remove restrictions on its AdWords program that were making it difficult for marketers to manage Internet advertising campaign across various platforms. The FTC found that Google's search result displays even if they harmed competitors were aimed at pleasing users, not stifling competition.
But Google's dominance is even stronger in Europe, where it controls around 80 percent of the total market and more than 90 percent in some countries, compared with just 67 percent in the U.S., according to data from comScore.
Almunia also mentioned other concessions Google has offered, which include giving websites more control over what parts of their sites turn up in Google results. In the past, Google had insisted that websites either opt out of inclusion in its search results or allow Google to determine what a site's most relevant content is and how it is displayed.