This technical white paper provides a systematic overview of the principal Postgres clustering types that EnterpriseDB® (EDB™) recommends to help a customer achieve enhanced availability and manageability. We will consider shared-disk clusters, streaming replication clusters, logical replication clusters and hybrid clusters (clusters that combine logical replication and streaming replication). Each architecture option is evaluated against key capabilities, such as high availability, disaster recovery, near-zero downtime maintenance, cloud suitability, transaction throughput and cost.