Database server compatibility with PostgreSQL version 18 is now generally available (GA):

Database server compatibility with PostgreSQL version 18 is now generally available (GA):

• You can create AlloyDB clusters with PostgreSQL 18 compatibility. • You can upgrade existing AlloyDB clusters running PostgreSQL major versions 14, 15, 16, or 17 to PostgreSQL major version 18 with one click. • You can use Database Migration Service to migrate databases to AlloyDB.