RDS vs MySQL on EC2: Which Should You Choose?
You can run MySQL yourself on an EC2 instance, or use RDS as a managed database service. This is fundamentally a trade-off between control and operational burden.
RDS (Managed)
Best for: Most businesses that want database reliability without dedicating engineering time to database administration.
MySQL on EC2 (Self-Managed)
Best for: Teams with strong database administration expertise who need very specific configuration control, or who want to minimize cost at the expense of operational overhead.
Cost Considerations
RDS typically costs more per hour than an equivalent EC2 instance running MySQL yourself, since you’re paying for the management layer. However, this needs to be weighed against the engineering time cost of properly managing backups, patching, and failover yourself — for most businesses, the time saved is worth more than the price difference. Self-managed MySQL only comes out ahead financially if you already have the expertise and capacity to manage it properly without dedicating significant ongoing time to it.
Performance & Security
Performance is broadly comparable for equivalent instance sizes, since RDS runs on similar underlying infrastructure. Security-wise, RDS handles patching and offers encryption at rest with less configuration required; self-managed MySQL requires you to handle these correctly yourself, which is a real risk if not done diligently and consistently.
Which Should You Choose?
Most businesses without dedicated DBAs
RDS is almost always the right call — the operational risk reduction is worth the additional cost for the vast majority of use cases.
Teams with strong in-house database expertise
Self-managed MySQL can make sense if you have the capacity to genuinely maintain it properly, not just initially set it up.
Cost-sensitive early-stage projects
Even here, we’d lean toward RDS unless the cost difference is genuinely significant for your specific budget — the operational risk of a poorly-maintained self-managed database is usually the more expensive mistake.
Our Take
We recommend RDS for the large majority of clients. The cost difference is usually modest relative to the operational risk it removes, and most businesses don’t have someone whose actual job is ongoing MySQL administration. If you do have that expertise in-house and want to self-manage, that’s a legitimate choice — we’d just make sure backups and monitoring are genuinely solid before recommending it.
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