SES, Eventbridge, Lambda and EC2 in AWS

Amazon Web Services (AWS) offers a comprehensive suite of cloud computing services that cater to various aspects of building and managing applications and infrastructure in the cloud. Here’s an overview of the architecture involving AWS services such as SES (Simple Email Service), Lambda, EventBridge, and EC2 (Elastic Compute Cloud):

AWS Services Overview

1. SES (Simple Email Service):

   • Purpose: SES is a scalable and cost-effective email service for sending and receiving emails. It simplifies the task of managing email delivery, including bulk email sending, transactional emails, and marketing campaigns.
   • Use Cases: Used by applications to send notifications, newsletters, alerts, and other types of email communication reliably and securely.

2. Lambda:

   • Purpose: Lambda is a serverless compute service that lets you run code without provisioning or managing servers. It automatically scales based on incoming traffic and executes code in response to events.
   • Use Cases: Lambda functions can be triggered by events from various AWS services, HTTP requests, or custom events. Common use cases include data processing, real-time file processing, backend services for mobile or web applications, and automation tasks.

3. EventBridge:

   • Purpose: EventBridge is a serverless event bus service that makes it easy to connect application data from various sources and AWS services. It allows you to route events to targets like Lambda functions, SNS (Simple Notification Service) topics, SQS (Simple Queue Service) queues, and more.
   • Use Cases: EventBridge enables event-driven architectures, decoupling components of applications and integrating services without direct dependencies. It supports real-time stream processing, monitoring, and automation workflows.

4. EC2 (Elastic Compute Cloud):

   • Purpose: EC2 provides scalable computing capacity in the cloud. It allows you to launch virtual servers (instances) with various configurations (such as operating system, CPU, memory, storage, and networking capacity) within minutes.
   • Use Cases: EC2 instances are used for running applications that require full control over the operating system and software stack, hosting websites, handling batch processing, and running enterprise applications.

Example AWS Architecture

Let’s consider an example architecture that integrates these AWS services:

• Use Case: Building a serverless application that sends notifications to users via email when specific events occur.

1. Event Source:

   • Events are generated by user actions on a web application, such as new user registration or completion of an order.

2. EventBridge Integration:

   • Events from the web application are sent to EventBridge for routing.

3. Lambda Function:

   • A Lambda function is triggered by events from EventBridge. This function processes the event data (e.g., user registration details or order information).

4. SES Integration:

   • The Lambda function integrates with SES to send notification emails to users. It formats the email content based on the event data and sends it securely using SES’s SMTP interface or API.

5. EC2 Instance (Optional):

   • An EC2 instance may host the web application frontend or backend services that interact with Lambda and EventBridge. It provides a scalable and flexible environment for hosting custom application logic.

Benefits of AWS Architecture

• Scalability: AWS services like Lambda and EC2 allow applications to scale automatically based on demand, ensuring optimal performance and cost-efficiency.

• Reliability: SES ensures reliable email delivery, while EventBridge facilitates reliable event-driven communication between components.

• Flexibility: AWS services provide flexibility in designing architectures that fit specific application requirements, whether serverless, traditional, or hybrid.