Spanner: Google's Globally-Distributed Database
Spanner is Google's globally distributed database that provides externally consistent reads and writes — the first system to achieve global ACID transactions at scale using TrueTime and Paxos.
Bigtable
Google's Distributed Storage System for Structured Data.
Google File System
Google's scalable distributed file system designed for large distributed data-intensive applications.
MapReduce
Google's simplified data processing on large clusters.