Welcome to Tmis project (a platform for raising capital with stablecoins USDT, USDC, BUSD, DAI, deployed on the Polygon-MAINET blockchain) this is a web 3 application built entirely with aws serverless services, making the development of this MVP not costly but completely ready to receive users.

The project architecture was designed to be completely serverless and scalable, that is why thinking about the best resources for the application I chose the following:

1 - Amazon DynamoDB on-demand capacity mode

What is Amazon DynamoDB?

Amazon DynamoDB is a fully managed serverless NoSQL database designed for high performance, scalability, and reliability. It is optimized for applications that require low-latency responses and can handle unpredictable traffic with ease.

---

Advantages of DynamoDB:

1. Serverless Architecture:

   • DynamoDB eliminates the need for infrastructure management. It automatically scales up or down based on traffic, making it perfect for MVPs and unpredictable workloads.
   • You only pay for what you use, either by on-demand pricing (ideal for low-traffic projects) or provisioned capacity.

2. Scalability:

   • DynamoDB can handle millions of requests per second. For a MVP, it ensures it can start small and scale seamlessly if the project grows.

3. Low Latency:

   • Provides single-digit millisecond latency for read and write operations, ensuring fast responses for API Gateway and Lambda.

4. Integration with Lambda:

   • DynamoDB integrates natively with AWS Lambda through DynamoDB Streams, allowing for event-driven architectures (e.g., updating the frontend when the database changes).

5. Highly Available and Reliable:

   • Data is automatically replicated across multiple availability zones, ensuring durability and fault tolerance.

6. Cost-Effective:

   • With on-demand mode, you only pay for the read/write requests you actually make, making it extremely cost-efficient for an MVP with low traffic.
   • Storage costs are low, and there are no maintenance overheads.

7. Ease of Use:

   • Being schema-less, it allows flexibility in storing JSON-like key-value or document data, which is great for early-stage development.

---

Why DynamoDB over other databases?

1. Compared to RDS (Relational Database Service):

   • RDS is not serverless (except Aurora Serverless), and even the smallest RDS instance has a baseline cost, which isn't ideal for a very low-cost MVP.
   • RDS requires some maintenance, like managing scaling and connections.

2. Compared to Aurora Serverless:

   • While Aurora Serverless provides serverless relational database capabilities, it is costlier than DynamoDB for low traffic and requires more configuration.

3. Compared to Amazon S3 for Data Storage:

   • S3 is object storage and not ideal for structured query capabilities like indexing or filtering. DynamoDB supports query and scan operations, making it better for storing and retrieving data efficiently.

4. Compared to Amazon Timestream or Neptune:

   • These databases are designed for specific use cases (time-series data or graph databases), which may not align with the generic needs of an MVP.

---

Why Choose DynamoDB for This MVP?

• Fits the Architecture: The project uses API Gateway and Lambda, which integrate seamlessly with DynamoDB. The serverless, event-driven nature of DynamoDB complements Lambda perfectly.
• Low Cost: For MVPs with low requests, the on-demand mode ensures minimal expenses without pre-allocating resources.
• Scalability: DynamoDB can effortlessly scale if MVP attracts significant traffic, providing future-proofing without upfront investment.

---

Acording to aws dynamodb website on-demand mode is recommended in most scenarios including if the project:

1. Have new or existing workloads and you do not want to manage capacity
2. Want a serverless database that automatically scales
3. Prefer the ease of paying for only what you use

This setup ensures a highly cost-efficient, scalable, and serverless solution for MVP web application.