AlloyDB, Spanner
About AlloyDB: https://dbdb.io/db/alloydb
Spanner: https://cloud.google.com/spanner?hl=en, https://www.youtube.com/watch?v=oeycOVX70aE&list=PLeKd45zvjcDFUEv_ohr_HdUFe97RItdiB&index=23
AlloyDB, Spanner
These are often grouped as "Premium/Advanced" databases, but they serve different needs:
AlloyDB:
What it is: A fully managed, PostgreSQL-compatible database that is "supercharged." It separates storage from compute to be much faster and more scalable than standard CloudSQL. It is Google's answer to Amazon Aurora.
AWS Equivalent: Amazon Aurora (PostgreSQL compatible)
Azure Equivalent: Azure Database for PostgreSQL (Flexible Server) or Azure Cosmos DB for PostgreSQL (formerly Citus)
Cloud Spanner:
What it is: A global, horizontally scalable relational database. It combines the structure of SQL with the infinite scale of NoSQL. It is designed for mission-critical apps that need to run across multiple continents simultaneously with zero downtime.
AWS Equivalent: Amazon Aurora Global Database or Amazon DynamoDB (though Dynamo is NoSQL, it matches the scale).
Azure Equivalent: Azure Cosmos DB (matches the global distribution/scale).
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