Browsing Concept: Block Sync

Block Sync is the procedure by which a cryptocurrency node retrieves validated block data from P2P peers on the network. A full node may only verify the most recent transactions once it finishes the block sync to the latest block.

One publication found under Block Sync
ELI5: Why is the “fast” Ethereum sync so slow?
Why is the geth sync so slow? I keep hearing this question again and again from Ethereum node operators. Why is it still so difficult to fully sync an Ethereum full node? Sl...