Animate the existing elements of the scene without adding any new objects.

The glowing purple portal ring on the left slowly rotates in place while its inner light softly pulses.
Blue digital energy particles that already exist in the scene move smoothly outward from the portal and travel toward the three server towers.

The three stacked data servers on the right gently pulse with neon blue and purple light along their horizontal lines as if data is being processed.
The light lines across the server stacks animate subtly from left to right to simulate flowing data.