How to send an automatic e-mail when an order for a shopping mall is received

1)Amazon Simple Email Service (SES): Use SES to send emails containing the digital key to customers. SES provides a reliable and scalable email sending service, and it can be easily integrated into your application to send transactional emails.

2)Amazon Simple Storage Service (S3):
    Store the digital keys securely in an S3 bucket. S3 provides highly durable and scalable object storage. You can generate unique keys for each customer and store them in the bucket. Ensure that the bucket is configured for private access only, and access is granted only to authorized users.

3)Amazon Relational Database Service (RDS) or Amazon DynamoDB:
    Store customer information and payment details securely in a database. You can use either RDS (if you prefer a relational database) or DynamoDB (if you prefer a NoSQL database). DynamoDB offers seamless scalability and high availability, while RDS offers the familiarity of traditional relational databases like MySQL, PostgreSQL, etc.

4)AWS Lambda:
    Use Lambda to create serverless functions that are triggered by events such as receiving the customer's email address and payment completion. These functions can handle the logic to generate the digital key, send emails using SES, and store/retrieve data from the database. Lambda allows you to run code without provisioning or managing servers.

5)Amazon API Gateway:
    If you need to expose APIs to interact with your system (e.g., to receive customer information or payment completion), you can use API Gateway to create and manage RESTful APIs. API Gateway integrates seamlessly with Lambda functions, allowing you to invoke Lambda functions in response to API requests.

AWS Identity and Access Management (IAM):
    Use IAM to manage permissions and access control for your AWS resources. Ensure that appropriate IAM roles and policies are defined to restrict access to sensitive resources and data.

6)Amazon CloudWatch:
    Monitor your AWS resources and applications using CloudWatch. You can set up alarms to notify you of any issues or unexpected behavior in your system.

By leveraging these AWS services, you can build a scalable, secure, and reliable system to automatically send digital keys to customers via email upon payment completion, without overlapping with the database. Additionally, AWS provides a wide range of tools and services to help you monitor, manage, and optimize your application as it scales and evolves.