> ## Documentation Index
> Fetch the complete documentation index at: https://notes.kodekloud.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Demonstration 1 Create 2 Stage Pipeline
> This tutorial guides you in building a two-stage CI/CD pipeline using AWS services for application deployment.
In this step-by-step tutorial, you’ll build a basic two-stage pipeline using **Amazon S3** for source storage and **AWS CodeDeploy** for deployment. We’ll follow the [AWS CodePipeline tutorial: Deploying from Amazon S3 to AWS CodeDeploy](https://docs.aws.amazon.com/codepipeline/latest/userguide/tutorials-s3-codedeploy.html) and use your [AWS Free Tier account](https://aws.amazon.com/free/). By the end, you’ll have a working CI/CD flow that pushes a sample application to EC2 Windows instances.
If you’re ready, let’s get started!
***
## 1. Create an S3 Bucket
1. Sign in to the AWS Management Console and open **Services > S3**.
2. Click **Create bucket** in the top-right corner.
3. Enter a unique bucket name (for example, `aws-codepipeline-demobucket-example-kodekloudmv`) and choose your region (e.g., **US West 2**).
4. Scroll down and click **Create bucket**.
After the bucket is created, you’ll see a success notification. Select your new bucket to configure it.
5. Go to **Properties**, enable **Bucket Versioning**, and click **Save changes**.
6. Download the sample application ZIP (Windows or Linux) as referenced in the tutorial.
7. Switch to **Objects** and **Upload** the sample ZIP file.
Bucket Versioning allows you to roll back to previous object versions and maintain a full history—critical for CI/CD source artifacts.
***
## 2. Create an IAM Role for EC2 Instances
This role grants EC2 instances the permissions needed by CodeDeploy and SSM.
1. Open **Services > IAM**, select **Roles**, then **Create role**.
2. Under **Trusted entity**, choose **AWS service** and select **EC2**.
3. Click **Next** and attach the following policies:
| Policy Name | Description |
| ----------------------------- | -------------------------------------------------------------- |
| AmazonEC2RoleforAWSCodeDeploy | Permissions for CodeDeploy to deploy applications on EC2 |
| AmazonSSMManagedInstanceCore | Allows AWS Systems Manager Agent to manage and patch instances |
4. Click **Next**, name the role **EC2InstanceRole**, and choose **Create role**.
***
## 3. Launch EC2 Windows Instances
We’ll deploy two Windows instances tagged for CodeDeploy.
1. Go to **Services > EC2** and click **Launch Instance**.
2. Set **Name and tags** → Name: `MyCodePipelineDemo`.
3. Choose a Windows Free Tier AMI and **t2.micro** instance type.
4. Under **Key pair**, select **Proceed without a key pair** (demo only).
5. In **Network settings**, enable **Auto-assign Public IP**.
6. Create a new security group allowing SSH (port 22) and HTTP (port 80) from your IP.
Skipping a key pair is only for demo purposes. In production, always use key pairs or Systems Manager Session Manager for secure access.
7. Expand **Advanced Details**, set **IAM instance profile** to **EC2InstanceRole**, and increase **Number of instances** to **2**.
8. Click **Launch instances**.
9. Note each instance’s **Public IPv4 DNS**—you’ll test the deployment later.
***
## 4. Create an IAM Role for CodeDeploy
1. In **IAM**, select **Roles > Create role**.
2. Choose **AWS service** → **CodeDeploy**, click **Next**.
3. The **AWSCodeDeployRole** policy is preselected—click **Next**.
4. Name the role **CodeDeployRole** and click **Create role**.
***
## 5. Configure CodeDeploy Application and Deployment Group
1. Navigate to **Services > CodeDeploy > Applications**, then **Create application**.
2. Enter **Application name**: `MyDemoApplication`. Select **EC2/On-premises** and click **Create application**.
3. Click **Create deployment group**.
4. Set **Deployment group name**: `MyDemoDeploymentGroup`. Choose **CodeDeployRole**.
5. Under **Environment configuration**, select **Amazon EC2 instances** and filter by tag:
* Key = `Name`
* Value = `MyCodePipelineDemo`
6. In **Agent configuration**, choose **Latest run** (schedule future updates).
7. For **Deployment settings**, select **CodeDeployDefault.OneAtATime**.
8. Disable **Load Balancing** and click **Create deployment group**.
***
## 6. Create the CodePipeline Pipeline
1. Open **Services > CodePipeline** and click **Create pipeline**.
2. Enter **Pipeline name**: `MyFirstPipeline`. Choose **New service role** and **Next**.
3. Configure the stages:
| Stage | Action | Provider |
| ------ | ------------------- | -------------- |
| Source | Fetch application | Amazon S3 |
| Build | *(skip for demo)* | — |
| Deploy | Release to EC2 pool | AWS CodeDeploy |
4. **Source stage**:
* Provider: **Amazon S3**
* Bucket: your demo bucket
* S3 object key: your uploaded ZIP filename
* Enable change detection
* Click **Next**
You can add a build or test stage here later—e.g., AWS CodeBuild or Jenkins—to run unit tests before deployment.
5. **Build stage**: click **Skip stage**.
6. **Deploy stage**:
* Provider: **AWS CodeDeploy**
* Region: your chosen region
* Application name: `MyDemoApplication`
* Deployment group: `MyDemoDeploymentGroup`
* Click **Next**, then **Create pipeline**
The pipeline will initialize and run automatically. You’ll see progress bars and success indicators.
***
## 7. Validate the Deployment
1. In CodePipeline, click **Details** to review execution logs.
2. Open the EC2 console, copy one instance’s **Public IPv4 DNS**, and paste it into your browser.
3. Confirm you see the sample HTML page—successful deployment!
Congratulations! You’ve built and validated your first CI/CD pipeline with AWS CodePipeline, using S3 as the source and CodeDeploy on EC2. In our next lesson, we'll dive into advanced stages and integrations.
***
## Links and References
* AWS CodePipeline tutorial: Deploying from S3 to CodeDeploy
* [AWS CodePipeline Documentation](https://docs.aws.amazon.com/codepipeline/)
* [AWS CodeDeploy Documentation](https://docs.aws.amazon.com/codedeploy/)
* [AWS IAM Best Practices](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html)
* [Amazon S3 Documentation](https://docs.aws.amazon.com/s3/)