2-tier vs 3-tier network architecture, futuristic laboratory setting, sleek metal tables, rows of computers, tangled cables, glowing screens, blue and green LED lights, dim ambient lighting, shallow depth of field, blurred background, sharp focus on central computer, 2D and 3D diagrams displayed on screens, colorful wires and circuits, neat labels and tags, organized chaos, minimalist decor, modern architecture, cityscape outside windows, nighttime, raindrops on glass.