Moveable Ink today announced that it secured $55 million in a Series D funding round led by Silver Lake with participation from Contour Venture Partners, Intel Capital, and others, bringing the marketing software startup’s total raised to $97 million. The investment comes as Moveable Ink — which was valued at $1.3 billion prior to the Series D– plans to invest in “AI-driven” products and expand its over-550-employee workforce to more than 700 by 2023.