SAN FRANCISCO — The decision by the European Commission on Tuesday to hit Google Inc. with a record antitrust fine of 2.42 billion euros ($2.7 billion) was hardly a surprise. EU officials had been telegraphing that the move was coming for weeks ahead of time.

But it’s also not the last word in Google’s testy relationship with EU competition regulators. Kent Walker, the company’s top lawyer, indicated in a blog post Tuesday that Google intends to appeal the decision. Here’s an overview of what will likely come next in the saga and how Google found itself in the crosshairs of the commission in the first place.

Can Google Fight the Decision?