Beginners Guide To Building a Serverless Website with AWS Lambda and API Gateway
Tags: aws, lambda, apigateway, serverless
Published: 2023-07-08 16:45:24


###Introduction:
Welcome to my blog! Today, I will guide you through the process of deploying your website to AWS Lambda function using API Gateway.
 By leveraging these powerful AWS services, One can create a scalable and cost-effective serverless architecture for your web application. 
Let's dive in!

Serverless Architecture with AWS Lambda and API Gateway:
AWS Lambda allows you to run code without managing servers,
 while API Gateway acts as a managed service for creating and managing APIs.
 This combination offers several key features and let's take a look at some:

###Scalability:
AWS Lambda automatically scales your functions based on the incoming request load. It ensures your website can handle high traffic without manual intervention, providing a seamless user experience.

###Cost-effectiveness:
With serverless architecture, you only pay for the actual compute time used by your functions. This eliminates the cost of idle servers, making it a cost-effective solution for hosting your website.

###Easy Deployment:
Updating your website becomes as simple as uploading new code to your Lambda functions. You don't need to worry about managing infrastructure, allowing for quick and hassle-free deployments.

###Flexibility:
AWS Lambda supports multiple programming languages, including Python, Node.js, Java, and more. You can choose the language that best suits your needs and leverage its features to build the backend logic of your website (I used python).

Now, let's get started with the step-by-step process of creating your serverless website.

##Step 1: Create a Lambda Function
- Sign in to the AWS Management Console and open AWS Lambda.
- Click on "Create function" to create a new Lambda function.
- Provide a name for your function and select the desired programming language, such as Python.
- Leave the advanced settings as default and click "Create function" to create the Lambda function.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dc1n7u3oyl8b570pzdz6.png)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v2fts3tyfl5crwssxq9u.png)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/wqh80m9agpj3si0mf7kw.png)

##Step 2: Set Up API Gateway as a Trigger
- Open Amazon API Gateway in the AWS Management Console.
- Click on "Create API" and choose the HTTP API option.
- Configure the security settings according to your requirements. For simplicity, you can choose Open (no authorization).
- Leave the advanced settings as default and click "Create API" to create the API Gateway.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/246v9o2t18sl2uowoutk.png)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ucziq2i78izxavdd5rqc.png)

##Step 3: Build Your Website
- Now, you can start building your website using HTML, CSS, and JavaScript.
- Upload your HTML code to the Lambda function you created, This will serve as the backend for your website. 
I only created a simple html code for this project


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ssxv45o92347atiwd01k.png)

##Step 4: Handle API Requests with Another Lambda Function
- Create another Lambda function that will handle the API requests from API Gateway. This function will be triggered whenever a request is made to your API.
- Write the Python code for this Lambda function, implementing the necessary logic to handle the API requests.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/76al163egs1afcti84ur.png)

##Step 5: Configure API Gateway Integration
- Configure the API Gateway integration for your new Lambda function. Specify the HTTP methods and their corresponding Lambda function handlers.
- This integration will connect your API Gateway to the Lambda function, ensuring that the incoming requests are correctly routed and processed.

##Step 6: Test Your Serverless Website
- Once everything is set up, test your serverless website by accessing the API endpoint URL provided by API Gateway.
- Open the URL in a web browser, and your website should be displayed correctly.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1201gyuimjscu79kbaqt.png)

Conclusion:
Congratulations! You have successfully deployed your website to AWS Lambda using API Gateway. By utilizing serverless architecture, you can enjoy the benefits of scalability, cost-effectiveness, easy deployment, flexibility, and integration with other AWS services. Keep exploring to optimize and enhance your serverless website further.

Happy coding and enjoy the power of AWS Lambda and API Gateway for your serverless web applications!