# Amazon DocumentDB, Amazon Relational Database Service (RDS) vs Amazon Simple Storage Service (S3) Comparison

| | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Star Rating** | 4.3 out of 5 | 4.5 out of 5 | 4.6 out of 5 | 
| **Total Reviews** | 44 | 907 | 948 | 
| **Largest Market Segment** | Small-Business (33.3% of reviews) | Mid-Market (37.7% of reviews) | Enterprise (39.3% of reviews) | 
| **Entry Level Price** | $0.10 GB/month (prices may vary across AWS regions)   GB | No pricing available | No pricing available | 

---
## Top Pros & Cons

### Amazon DocumentDB

Pros:
- Cloud Computing (1 reviews)
- Easy Integrations (1 reviews)

Cons:
- Complexity (1 reviews)
- Dependency Issues (1 reviews)

### Amazon Relational Database Service (RDS)

Pros:
- Ease of Use (15 reviews)
- Scalability (13 reviews)

Cons:
- Expensive (18 reviews)
- Complexity (7 reviews)

### Amazon Simple Storage Service (S3)

Pros:
- Scalability (7 reviews)
- Security (6 reviews)

Cons:
- Pricing Issues (4 reviews)
- Complex Features (3 reviews)

---
## Ratings Comparison
| Rating | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
  | **Meets Requirements** | 8.6 (38 reviews) | 9.0 (744 reviews) | 9.2 (681 reviews) | 
  | **Ease of Use** | 8.6 (37 reviews) | 8.8 (752 reviews) | 8.7 (685 reviews) | 
  | **Ease of Setup** | 8.5 (11 reviews) | 8.9 (528 reviews) | 8.6 (341 reviews) | 
  | **Ease of Admin** | 8.2 (10 reviews) | 8.7 (436 reviews) | 8.5 (315 reviews) | 
  | **Quality of Support** | 8.6 (37 reviews) | 8.6 (716 reviews) | 8.6 (605 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.5 (10 reviews) | 8.8 (424 reviews) | 9.0 (299 reviews) | 
  | **Product Direction (% positive)** | 7.9 (33 reviews) | 9.5 (704 reviews) | 9.0 (639 reviews) | 

---
## Pricing

### Amazon DocumentDB

#### Entry-Level Pricing

Plan: Amazon DocumentDB Pricing

Price: $0.10 GB/month (prices may vary across AWS regions)   GB

Description: Amazon DocumentDB is priced in four dimensions: 1) On-demand instances The amount of compute instances for a cluster (pricing per second with a 10-minute minimum); 2) Database I/O: The amount of I/O used when reading and writing data to your cluster’s storage volume (pricing per million I/Os); 3) Database storage: The amount of data stored in your cluster's storage volume (pricing per GB/month); 4) Backup storage: The amount of backup storage used in excess of your cluster’s database storage usage (pricing per GB/month). Other AWS-wide costs (such as data transfer between applications and DocumentDB across Availability Zones) may also apply.


[Learn more about Amazon DocumentDB](https://www.g2.com/products/amazon-documentdb/reviews)

#### Free Trial

No

### Amazon Relational Database Service (RDS)

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

### Amazon Simple Storage Service (S3)

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

---
## Features Comparison By Category

### Relational Databases

| Product | Score | Reviews |
|---|---|---|
| **Amazon DocumentDB** | N/A | N/A |
| **Amazon Relational Database Service (RDS)** | 8.8/10 | 468 |
| **Amazon Simple Storage Service (S3)** | N/A | N/A |

#### Management 

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Data Schema** | Not enough data | 8.8 (306 reviews) | Not enough data | 
| **Query Language** | Not enough data | 8.9 (310 reviews) | Not enough data | 
| **ACID - Complaint** | Not enough data | 8.8 (295 reviews) | Not enough data | 
| **Data Replication** | Not enough data | 8.9 (304 reviews) | Not enough data | 

#### Support 

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Text Search** | Not enough data | 8.3 (300 reviews) | Not enough data | 
| **Data Types** | Not enough data | 8.7 (312 reviews) | Not enough data | 
| **Languages** | Not enough data | 8.6 (306 reviews) | Not enough data | 
| **Operating Systems** | Not enough data | 8.8 (310 reviews) | Not enough data | 

#### Security

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Database Locking** | Not enough data | 8.6 (299 reviews) | Not enough data | 
| **Access Control** | Not enough data | 8.7 (315 reviews) | Not enough data | 
| **Encryption** | Not enough data | 8.9 (309 reviews) | Not enough data | 
| **Authentication** | Not enough data | 8.8 (312 reviews) | Not enough data | 

#### Performance 

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Disaster Recovery** | Not enough data | 8.8 (305 reviews) | Not enough data | 
| **Data Concurrency** | Not enough data | 8.6 (299 reviews) | Not enough data | 
| **Workload Management** | Not enough data | 8.7 (307 reviews) | Not enough data | 
| **Advanced Indexing** | Not enough data | 8.5 (293 reviews) | Not enough data | 
| **Query Optimizer** | Not enough data | 8.5 (297 reviews) | Not enough data | 

#### Database Features

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Storage** | Not enough data | 9.0 (438 reviews) | Not enough data | 
| **Availability** | Not enough data | 9.2 (438 reviews) | Not enough data | 
| **Stability** | Not enough data | 9.0 (435 reviews) | Not enough data | 
| **Scalability** | Not enough data | 9.2 (425 reviews) | Not enough data | 
| **Security** | Not enough data | 9.1 (432 reviews) | Not enough data | 
| **Data Manipulation** | Not enough data | 8.5 (403 reviews) | Not enough data | 
| **Query Language** | Not enough data | 8.8 (420 reviews) | Not enough data | 

### Document Databases

| Product | Score | Reviews |
|---|---|---|
| **Amazon DocumentDB** | 9.2/10 | 11 |
| **Amazon Relational Database Service (RDS)** | N/A | N/A |
| **Amazon Simple Storage Service (S3)** | N/A | N/A |

#### Data Management

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Data Model** | 9.4 (6 reviews) | Not enough data | Not enough data | 
| **Data Types** | 9.0 (5 reviews) | Not enough data | Not enough data | 
| **Built - In Search** | 9.7 (5 reviews) | Not enough data | Not enough data | 
| **Event Triggers** | 9.3 (5 reviews) | Not enough data | Not enough data | 

#### Availability

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Auto Sharding** | 8.6 (6 reviews) | Not enough data | Not enough data | 
| **Auto Recovery** | 9.5 (7 reviews) | Not enough data | Not enough data | 
| **Data Replication** | 9.0 (5 reviews) | Not enough data | Not enough data | 

#### Performance

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Query Optimization** | 8.7 (5 reviews) | Not enough data | Not enough data | 

#### Security

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Role-Based Authorization** | 9.7 (5 reviews) | Not enough data | Not enough data | 
| **Authentication** | 9.2 (6 reviews) | Not enough data | Not enough data | 
| **Audit Logs** | 10.0 (5 reviews) | Not enough data | Not enough data | 
| **Encryption** | 10.0 (7 reviews) | Not enough data | Not enough data | 

#### Support

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Multi-Model** | 8.7 (5 reviews) | Not enough data | Not enough data | 
| **Operating Systems** | 8.7 (5 reviews) | Not enough data | Not enough data | 
| **BI Connectors** | 8.0 (5 reviews) | Not enough data | Not enough data | 

### Object Storage Solutions

| Product | Score | Reviews |
|---|---|---|
| **Amazon DocumentDB** | N/A | N/A |
| **Amazon Relational Database Service (RDS)** | N/A | N/A |
| **Amazon Simple Storage Service (S3)** | 9.2/10 | 65 |

#### Functionality

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Versioning** | Not enough data | Not enough data | 9.1 (60 reviews) | 
| **Scalability** | Not enough data | Not enough data | 9.6 (58 reviews) | 
| **Speed of access** | Not enough data | Not enough data | 9.3 (57 reviews) | 

#### Reliability

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Redundancy** | Not enough data | Not enough data | 9.2 (53 reviews) | 
| **Availability** | Not enough data | Not enough data | 9.7 (58 reviews) | 

#### Security

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Encryption** | Not enough data | Not enough data | 9.3 (54 reviews) | 
| **Auditing** | Not enough data | Not enough data | 8.6 (52 reviews) | 
| **Access control** | Not enough data | Not enough data | 8.8 (58 reviews) | 

#### Compatibility

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Infrastructure compatibility** | Not enough data | Not enough data | 9.2 (52 reviews) | 
| **Interoperability** | Not enough data | Not enough data | 9.1 (50 reviews) | 

### Database as a Service (DBaaS)

| Product | Score | Reviews |
|---|---|---|
| **Amazon DocumentDB** | 9.3/10 | 19 |
| **Amazon Relational Database Service (RDS)** | 8.7/10 | 281 |
| **Amazon Simple Storage Service (S3)** | N/A | N/A |

#### Configuration

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Application Performance** | 9.3 (16 reviews) | 8.8 (247 reviews) | Not enough data | 
| **Orchestration** | 8.7 (15 reviews) | 8.4 (242 reviews) | Not enough data | 
| **Database Monitoring** | 8.6 (14 reviews) | 8.6 (251 reviews) | Not enough data | 
| **Anomaly Detection** | 8.7 (13 reviews) | 8.1 (227 reviews) | Not enough data | 
| **Network Security** | 9.0 (14 reviews) | 8.9 (244 reviews) | Not enough data | 

#### Database Administration

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Provisioning** | 9.2 (14 reviews) | 8.8 (242 reviews) | Not enough data | 
| **Governance** | 8.8 (13 reviews) | 8.6 (232 reviews) | Not enough data | 
| **Auditing** | 9.4 (13 reviews) | Feature Not Available | Not enough data | 

#### Availability

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Scalability** | 9.4 (14 reviews) | 9.1 (249 reviews) | Not enough data | 
| **Backup** | 9.7 (15 reviews) | 9.1 (252 reviews) | Not enough data | 
| **Archiving** | 9.6 (13 reviews) | Feature Not Available | Not enough data | 
| **Indexing** | 9.0 (15 reviews) | 8.7 (232 reviews) | Not enough data | 

#### Security

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Data Masking** | 9.4 (9 reviews) | 8.3 (170 reviews) | Not enough data | 
| **Authentication And Single Sign-On** | 9.4 (9 reviews) | 8.6 (181 reviews) | Not enough data | 
| **Data Anonymization** | 9.3 (9 reviews) | 8.4 (170 reviews) | Not enough data | 

#### Data Management

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Data Replication** | 9.7 (10 reviews) | 8.8 (188 reviews) | Not enough data | 
| **Advanced Data Analytics** | 9.8 (10 reviews) | 8.6 (175 reviews) | Not enough data | 

### NoSQL Databases

| Product | Score | Reviews |
|---|---|---|
| **Amazon DocumentDB** | N/A | N/A |
| **Amazon Relational Database Service (RDS)** | N/A | N/A |
| **Amazon Simple Storage Service (S3)** | N/A | N/A |

#### Database Features

| Feature | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Storage** | Not enough data | 9.0 (438 reviews) | Not enough data | 
| **Availability** | Not enough data | 9.2 (438 reviews) | Not enough data | 
| **Stability** | Not enough data | 9.0 (435 reviews) | Not enough data | 
| **Scalability** | Not enough data | 9.2 (425 reviews) | Not enough data | 
| **Security** | Not enough data | 9.1 (432 reviews) | Not enough data | 
| **Data Manipulation** | Not enough data | 8.5 (403 reviews) | Not enough data | 
| **Query Language** | Not enough data | 8.8 (420 reviews) | Not enough data | 

---
## Categories

**Unique to Amazon DocumentDB (2):** [Database as a Service (DBaaS) Providers](https://www.g2.com/categories/database-as-a-service-dbaas), [Document Databases](https://www.g2.com/categories/document-databases)

**Unique to Amazon Relational Database Service (RDS) (2):** [Database as a Service (DBaaS) Providers](https://www.g2.com/categories/database-as-a-service-dbaas), [Relational Databases](https://www.g2.com/categories/relational-databases)

**Unique to Amazon Simple Storage Service (S3) (1):** [Object Storage Solutions](https://www.g2.com/categories/object-storage-solutions)


---
## Reviewer Demographics

### By Company Size

| Segment | Amazon DocumentDB | Amazon Relational Database Service (RDS) | Amazon Simple Storage Service (S3) | 
|---|---|---|---|
| **Small-Business** | 33.3% | 29.0% | 29.3% | 
| **Mid-Market** | 33.3% | 37.7% | 31.4% | 
| **Enterprise** | 33.3% | 33.4% | 39.3% | 

### By Industry

#### Amazon DocumentDB

- **Information Technology and Services:** 23.8%
- **Computer Software:** 19.0%
- **Internet:** 4.8%
- **Banking:** 4.8%
- **Food & Beverages:** 4.8%
- **Entertainment:** 4.8%
- **Accounting:** 2.4%
- **Automotive:** 2.4%
- **Biotechnology:** 2.4%
- **Broadcast Media:** 2.4%
- **Other:** 28.6%

#### Amazon Relational Database Service (RDS)

- **Information Technology and Services:** 22.6%
- **Computer Software:** 17.0%
- **Financial Services:** 6.0%
- **Computer & Network Security:** 3.7%
- **Telecommunications:** 3.2%
- **Hospital & Health Care:** 3.1%
- **Health, Wellness and Fitness:** 2.7%
- **Banking:** 2.5%
- **Retail:** 2.4%
- **Internet:** 2.2%
- **Other:** 34.4%

#### Amazon Simple Storage Service (S3)

- **Information Technology and Services:** 19.7%
- **Computer Software:** 17.8%
- **Financial Services:** 6.7%
- **Internet:** 4.2%
- **Marketing and Advertising:** 3.1%
- **Insurance:** 2.5%
- **Education Management:** 2.5%
- **Banking:** 2.0%
- **Hospital & Health Care:** 2.0%
- **Telecommunications:** 2.0%
- **Other:** 37.5%

---
## Alternatives

### Alternatives to Amazon DocumentDB

- [MongoDB Atlas](https://www.g2.com/products/mongodb-atlas/reviews) — 4.5/5 stars (370 reviews)
- [Couchbase](https://www.g2.com/products/couchbase/reviews) — 4.3/5 stars (150 reviews)
- [Google Cloud Firestore](https://www.g2.com/products/google-cloud-firestore/reviews) — 4.2/5 stars (97 reviews)
- [MongoDB](https://www.g2.com/products/mongodb/reviews) — 4.5/5 stars (557 reviews)
- [Oracle Database](https://www.g2.com/products/oracle-database/reviews) — 4.3/5 stars (1010 reviews)
- [DigitalOcean](https://www.g2.com/products/digitalocean/reviews) — 4.6/5 stars (749 reviews)
- [ScyllaDB](https://www.g2.com/products/scylladb/reviews) — 4.5/5 stars (427 reviews)
- [IBM Db2](https://www.g2.com/products/ibm-db2/reviews) — 4.1/5 stars (682 reviews)
- [Google Cloud SQL](https://www.g2.com/products/google-cloud-sql/reviews) — 4.5/5 stars (366 reviews)
- [Ninox](https://www.g2.com/products/ninox/reviews) — 4.7/5 stars (362 reviews)

### Alternatives to Amazon Relational Database Service (RDS)

- [Oracle Database](https://www.g2.com/products/oracle-database/reviews) — 4.3/5 stars (1010 reviews)
- [IBM Db2](https://www.g2.com/products/ibm-db2/reviews) — 4.1/5 stars (682 reviews)
- [SAP HANA Cloud](https://www.g2.com/products/sap-hana-cloud-2025-10-01/reviews) — 4.3/5 stars (621 reviews)
- [Google Cloud SQL](https://www.g2.com/products/google-cloud-sql/reviews) — 4.5/5 stars (366 reviews)
- [Azure SQL Database](https://www.g2.com/products/azure-sql-database/reviews) — 4.5/5 stars (241 reviews)
- [EDB Postgres Advanced Server](https://www.g2.com/products/edb-postgres-advanced-server/reviews) — 4.5/5 stars (37 reviews)
- [Microsoft SQL Server](https://www.g2.com/products/microsoft-sql-server/reviews) — 4.4/5 stars (2280 reviews)
- [MySQL](https://www.g2.com/products/mysql/reviews) — 4.4/5 stars (1675 reviews)
- [DigitalOcean](https://www.g2.com/products/digitalocean/reviews) — 4.6/5 stars (749 reviews)
- [PostgreSQL](https://www.g2.com/products/postgresql/reviews) — 4.4/5 stars (679 reviews)

### Alternatives to Amazon Simple Storage Service (S3)

- [Google Cloud Storage](https://www.g2.com/products/google-cloud-storage/reviews) — 4.6/5 stars (599 reviews)
- [Akamai Cloud Computing](https://www.g2.com/products/akamai-cloud-computing/reviews) — 4.6/5 stars (406 reviews)
- [Azure Blob Storage](https://www.g2.com/products/azure-blob-storage/reviews) — 4.6/5 stars (109 reviews)
- [DigitalOcean Spaces](https://www.g2.com/products/digitalocean-spaces/reviews) — 4.4/5 stars (45 reviews)
- [MinIO AIStor](https://www.g2.com/products/minio-aistor/reviews) — 4.3/5 stars (17 reviews)
- [zStorage](https://www.g2.com/products/zstorage-2025-10-01/reviews) — 4.3/5 stars (26 reviews)
- [Cloudian HyperStore](https://www.g2.com/products/cloudian-hyperstore/reviews) — 4.7/5 stars (13 reviews)
- [Wasabi Object Storage](https://www.g2.com/products/wasabi-object-storage/reviews) — 4.4/5 stars (65 reviews)
- [IBM Cloud Object Storage](https://www.g2.com/products/ibm-cloud-object-storage/reviews) — 3.9/5 stars (28 reviews)
- [IDrive Online and SaaS Backup, Object Storage e2](https://www.g2.com/products/idrive-online-and-saas-backup-object-storage-e2/reviews) — 4.4/5 stars (1927 reviews)

---
## Top Discussions

### Amazon DocumentDB

No discussions available for this product.

### Amazon Relational Database Service (RDS)

- Title: [What is Amazon Relational Database Service (RDS) used for?](https://www.g2.com/discussions/what-is-amazon-relational-database-service-rds-used-for) — 2 comments, 2 upvotes
  > **Top comment:** "Amazon Relational Database Service (RDS) is a cloud-based service offered by Amazon Web Services (AWS) that is used for managing and operating relational..."
- Title: [An Amazon RDS performance best practice is to allocate enough RAM so that your working set resides almost completely in memory.](https://www.g2.com/discussions/an-amazon-rds-performance-best-practice-is-to-allocate-enough-ram-so-that-your-working-set-resides-almost-completely-in-memory) — 1 comment, 1 upvote
  > **Top comment:** "nice"

### Amazon Simple Storage Service (S3)

- Title: [What type of storage is Amazon s3 used for?](https://www.g2.com/discussions/what-type-of-storage-is-amazon-s3-used-for) — 2 comments, 1 upvote
  > **Top comment:** "S3 is a object type and highly scalable storage service.
We can access the s3 content from anywhere and provides the high availability and high performance."
- Title: [How are other S3 users solving business problems?](https://www.g2.com/discussions/how-are-other-s3-users-solving-business-problems) — 2 comments, 1 upvote
  > **Top comment:** "The price is quite expensive "
- Title: [Cost plans](https://www.g2.com/discussions/cost-plans) — 1 comment, 1 upvote
  > **Top comment:** "https://aws.amazon.com/s3/pricing/"

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/amazon-documentdb-vs-amazon-relational-database-service-rds-vs-amazon-simple-storage-service-s3)