I'm pretty sure both Azure and AWS are merely reselling the same HPE Compute Scale-up Server 3200 chassis with some variations. Azure seems to have only the 16-socket model, but AWS has the 32-socket model.

That AWS instance uses these 60-core processors: https://www.intel.com/content/www/us/en/products/sku/231747/...

To anyone wondering about these huge memory systems: avoid them if at all possible! Only ever use these if you absolutely must.

For one, these systems have specialised parts that are more expensive per unit compute: $283 per CPU core instead of something like $85 for a current-gen AMD EPYC, which are also about 2x as fast as the older Intel Scalable Xeons that need to go into this chassis! So the cost efficiency ratio is something like 6:1 in favour of AMD processors. (The cost of the single large host system vs multiple smaller ones can get complicated.)

The second effect is that 32-way systems have huge inter-processor cache synchronisation overheads. Only very carefully coded software can scale to use thousands of cores without absolutely drowning in cache line invalidations.

At these scales you're almost always better off scaling out "medium" sized boxes. A single writer and multiple read-only secondary replicas will take you very far, up to hundreds of gigabits of aggregate database traffic.