Good feedback–and rational. I'll ask the designer to consider removing the blue hexagon and making the icons glyphs. The design predates me. There might be an equally rational explanation for why it is the way it is, and it's worth asking.
I would however suggest to differentiate the services by color-coding the background: blue for Compute, red for Storage and DB, orange for Machine Learning etc. This will make it easier to take in the diagrams at a glance.