EC2 vs RDS
EC2 (Elastic Compute Cloud) and RDS (Relational Database Service) both come up in technology conversations and get confused. Here's the plain-English difference, side by side, so you can use each one with confidence.
The key difference: EC2 refers to elastic compute cloud, while RDS refers to relational database service — they describe different things even when they show up in the same sentence.
EC2 — Elastic Compute Cloud
Amazon's on-demand virtual server product — the original cloud primitive. EC2 instances are the raw compute beneath most managed AWS services.
RDS — Relational Database Service
Amazon's managed relational database offering (Postgres, MySQL, SQL Server, etc). RDS handles patching, backups, and failover so teams stop running databases on glued-together EC2 boxes.
When to use EC2
Reach for "EC2" when the conversation is specifically about elastic compute cloud. Amazon's on-demand virtual server product — the original cloud primitive. EC2 instances are the raw compute beneath most managed AWS services.
When to use RDS
Reach for "RDS" when the conversation is specifically about relational database service. Amazon's managed relational database offering (Postgres, MySQL, SQL Server, etc). RDS handles patching, backups, and failover so teams stop running databases on glued-together EC2 boxes.
FAQs
What is the difference between EC2 and RDS?
EC2 stands for Elastic Compute Cloud — Amazon's on-demand virtual server product — the original cloud primitive. EC2 instances are the raw compute beneath most managed AWS services. RDS stands for Relational Database Service — Amazon's managed relational database offering (Postgres, MySQL, SQL Server, etc). RDS handles patching, backups, and failover so teams stop running databases on glued-together EC2 boxes.
Are EC2 and RDS the same thing?
No. They're often used in the same conversation because they're related, but they describe different concepts. EC2 = Elastic Compute Cloud. RDS = Relational Database Service.
When should I use EC2 vs RDS?
Use EC2 when you're specifically referring to elastic compute cloud. Use RDS when the topic is relational database service.