Generate a vibrant digital marketing agency poster with a modern layout, featuring a bold color scheme of blues and whites, and a clean sans-serif font, with a group of diverse professionals in the background, including a woman with curly brown hair and a man with a beard, both with bright smiling faces and varied skin tones, working together on laptops and tablets, surrounded by creative graphics and icons, such as gears, bulbs, and rockets, symbolizing innovation and growth, and a prominent agency logo in the foreground, with a stylized letterform and a tagline that reads Empowering Business Online, in a sleek and contemporary design style, with ample negative space and a clear call-to-action, showcased on a white background with a subtle gradient effect.