Do I need Aurora PostgreSQL or is standard PostgreSQL enough?

Usually standard PostgreSQL is enough unless you specifically need the managed scale, availability, or operational features that Aurora PostgreSQL provides.

Use standard PostgreSQL if you want:

• Lower cost
• Simpler architecture
• Full PostgreSQL compatibility with fewer AWS-specific considerations
• A typical app/database setup with moderate traffic
• Easier portability across cloud/on-prem environments

Consider Aurora PostgreSQL if you need:

• Higher availability with built-in multi-AZ style resilience
• Faster failover and less downtime during outages
• Read scaling with multiple replicas
• Better performance at larger scale in many workloads
• Managed storage that auto-scales
• Tight AWS integration and you’re okay being more AWS-specific

Rule of thumb

• Small to mid-sized app, startup, internal tool, or cost-sensitive project: standard PostgreSQL
• Mission-critical production system, heavy traffic, or strong HA/SLA requirements: Aurora PostgreSQL

One important note

Aurora PostgreSQL is PostgreSQL-compatible, but it’s not exactly the same as vanilla PostgreSQL. If you rely on extensions, specific tuning, or exact PostgreSQL behavior, standard PostgreSQL may be safer.

If you tell me:

1. your expected traffic,
2. uptime requirements,
3. whether you need read replicas/high availability,
4. and your budget,

I can recommend one very directly.