How does managed Amazon Aurora PostgreSQL differ from standard PostgreSQL in terms of usage and architecture?

Amazon Aurora PostgreSQL is a managed cloud database compatible with PostgreSQL, provided by AWS. Key differences from standard PostgreSQL:

• Manageability: Aurora is fully managed by AWS, including automatic backups, updates, patches, and scaling, reducing the load on administrators.
• Storage architecture: Aurora uses a distributed, fault-tolerant storage with multiple copies of data across different availability zones, increasing reliability and availability.
• Performance: Aurora is optimized for high performance, providing up to 5 times faster speed compared to standard PostgreSQL on the same hardware.
• Scalability: Read scaling can be easily achieved with replicas that quickly synchronize with the primary instance.

In summary, Aurora is PostgreSQL with cloud enhancements that simplify operation and increase fault tolerance and performance.