How to Build Serverless Application

What is ServerLess?

Serverless computing allows you to build and run applications and services without thinking about servers. With serverless computing, your application still runs on servers, but all the server management is done by AWS. Using AWS and its Serverless Platform, you can build and deploy applications on cost-effective services that provide built-in application availability and flexible scaling capabilities.

I think now you have some understanding about serverless let’s learn it more by building.

Why build a serverless application?

Building a serverless application allows you to focus on your application code instead of managing and operating infrastructure. You do not have to think about provisioning or configuring servers since AWS handles all of this for you. This reduces your infrastructure management burden and helps you get faster time-to-market.

Building a serverless application offers you four main benefits:

1. No server management
There is no need to provision or maintain any servers. There is no software or runtime to install, maintain, or administer.

2. Flexible scaling
Your application can be scaled automatically or by adjusting its capacity through toggling the units of consumption (e.g. throughput, memory) rather than units of individual servers.

3. High availability
Serverless applications have built-in availability and fault tolerance. You do not need to architect for these capabilities since the services running the application provide them by default.

4. No idle capacity
You do not have to pay for idle capacity. There is no need to pre- or over-provision capacity for things like compute and storage. For example, there is no charge when your code is not running.

Benefits of building a Serverless Web Application

Here the main benefits of Building this kind of application:

1. Flexible Scaling

Once you create the serverless application, it will get scaled automatically.

2. No Server Management

Once you have built the serverless web application, there shall be no need to maintain the servers. There is no available software to support, administer or to maintain.

3. No Idle Capacity

With the serverless computing, there is no need to pay for idle capacity. You will not find the necessity to pre- or over-provision the ability for items like storage or computer.

4. High Availability

Serverless applications are designed to have the built-in availability and the fault tolerance. You, therefore, don’t require to architect for the capabilities since the application is being run by the services that provide them by default.

How do I build a serverless application?

You can build a serverless web application by using several AWS services together. Each service is fully managed and does not require you to provision or manage servers. You only need to configure them together and upload your application code to AWS Lambda, a serverless compute service.

That having been said and done, let’s have a look at how you can build a Serverless Web Application.

1. Static Web Hosting

It is the crucial step in building the serverless application. Amazon S3 is capable of hosting the static web resources which include HTML, JavaScript, CSS and the image files which are loaded in the browser.

2. User Management

Amazon Cognito can provide the user management and to authenticate functions for securing the backend API.

3. Serverless Backend

The DynamoDB from Amazon provides a persistent layer. It is where the data can get stored by the use of API’s function by use of the AWS Lambda.

4. Restful APIs

The JavaScripot that gets executed in the browser has the capability of sending and receiving data from the public.

5. Resource Cleanup

The creation of the resources throughout the tutorial will get terminated.

For to ensure that you are successful in building the application, it is essential to make sure that you have completed each model in a sequential order. The models depend on the resources that that got created previously.

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