Serverless computing is one of the most popular terms in IT. Nearly every company is curious about the benefits of a serverless web app. As the name suggests, serverless computing eliminates the need to rely on servers.
It is possible to develop and manage applications and services without worrying about servers. Does this mean that servers are no longer necessary? Absolutely not! Your applications would still run on servers. The AWS serverless app takes care of server management. Amazon Web Services (AWS), and its Serverless Platform, offer promising opportunities to build and deploy applications using cost-effective services.
This allows you to focus more on your application code, which leads to significant improvements in the functionality and usability of your applications. A serverless web app eliminates the need to worry about availability and scaling, as well as the need to provision, configure, and manage servers.
This discussion will help you to understand the steps involved in building a serverless web app with AWS Lambda. It is obvious that each step of creating serverless web apps demonstrates the importance of different AWS services. This discussion also provides an overview of AWS web app architecture to help you understand how different AWS services are used in serverless web apps.
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AWS Serverless Web Applications Architecture
As we have already mentioned, you can learn more about serverless web application development by looking at the AWS serverless app architecture. You can create a serverless web app by leveraging multiple AWS services together. You only need to ensure that they are compatible before uploading the application code into AWS Lambda.
AWS Lambda is actually a serverless computing service. Here’s an example of AWS’ serverless application architecture. The serverless architecture demonstrates the functions of various AWS services.
Read here the complete guide to Serverless Architecture: https://www.whizlabs.com/blog/serverless-architecture/
Steps to Develop Serverless Web Applications
To fully understand the image above, we will need to dive into this AWS serverless tutorial. Understanding each step in building an AWS serverless web app is the best way to understand it. This is a list of steps that are required to create a serverless web application using AWS services.
Step 1: Hosting a static website
Configuring Amazon S3 (Simple Storage Service) is the first step in creating an AWS serverless website. To host the static resources of a web application, you must configure Amazon S3. Your application’s static web content would include HTML, JavaScript and images as well as CSS files.
End users could access the web app through a public URL that Amazon S3 dictates. You don’t need to worry about hosting web servers or using other services to ensure availability. These are the steps you need to follow in order to host a static site.
Select the appropriate AWS Region
Creation of an S3 bucket.
Upload content to the S3 Bucket
A bucket policy is an addition to enable public readings.
Hosting website.
Validating the implementation
Step 2: User Management
The management of users is the second step in building a serverless website application. This involves creating an Amazon Cognito user pool to manage user accounts. Developers then need to deploy pages that allow customers register as new users on the website. Developers should also deploy pages that allow customers to verify their email addresses and sign in to the site. These are the important steps to take when building a serverless app on AWS.
Create an Amazon Cognito User Pool
Addition of an app to the User Pool
Update the config.js file within the website bucket
Validity testing of the implementation
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Step 3: Create a serverless service backend
AWS Lambda or Amazon DynamoDB could be used by developers in this stage to develop backend processes that manage requests for a web application. The first stage’s browser application allows users to request the transfer of services. JavaScript will be used to invoke a cloud-based service. This stage requires that you follow these steps:
