Modern data center infrastructure, the digital transformation and high compute/value workloads Underneath that umbrella I would easily talk storage, network and server architecture with transformational-type workloads (FPGA's, GPU offload, etc.). How and why to pivot depending on the needs, and then I would actually be the one to design the architecture to sell to the customer.
Ok I'll admit, I do 2+ hour presentations every week of the above already. Heading out to do 1 today in about 30 minutes. You'd be surprised how good you get a public speaking when you do it regularly.
or...
Bourbon, I could fucking talk about bourbon.