Getty Images Holdings and Shutterstock agreed to combine in a deal that creates a $3.7 billion visual content company.Why it matters: The deal underscores the soaring demand for images and related content from content creators and platforms. Zoom in: Getty CEO Craig Peters will remain chief executive of the combined business, which will trade under the GETY ticker symbol.Shutterstock shareholders get one of the following: $28.84 per share in cash ($1.03 billion based on Shutterstock's outstandin...