Building Realtime Applications with Serverless Architecture

Serverless architecture is referred to as serverless computing. It has received an ample amount of attention in the latest years owing to its flexibility, agility, and affordability. In cloud-based setups, the specific serverless architecture provides assistance to business enterprises in removing the need for expensive regular servers. The serverless saas development provides scope for new opportunities in app scalability and app development. It removes the need for server management, thereby allowing automatic scaling. Thus, it helps eradicate operational overheads.

Serverless computing boasts deep-seated backgrounds. It comes from virtual machines, data centers, and elastic compute clouds to usher in the serverless computing age. The enhanced simplicity and demand it provides allow investors to invest in the serverless architecture.

What is serverless architecture?

Serverless architecture happens to be the approach in the cloud computing sector, which provides a suitable opportunity for developers to create and run services without the need to handle the specific underlying infrastructure. As the app executes on the server, the cloud service provider manages different infrastructure and server management tasks, like handling operational systems, server provisioning, and resource allocation. Thus, the developers will write and deploy the code without the need to deal with server management or computing resource management.

Serverless architecture in fundamental terms

Gaining a prerequisite understanding of the specific fundamental terms is essential in the serverless architecture, as they are known to shape the framework to grasp the serverless system’s functionality and dynamics. Such terms have an integral role in defining the serverless computing operation and structure:


It is known to measure the total count of time necessary to run the serverless function.


It is considered to be the representation of the single-function execution.


It signifies the functions, which do not maintain the memory or state between different invocations. Thus, it enables hassle-free distribution and scalability.


It is known to trigger the function execution, which originates from different sources, such as file uploads, database changes, HTTP requests, timers, and different external services, which help make the serverless apps event-driven.

Warm execution

It refers to the function that is invoked with the allocated resources and the initialized runtime environment, which results in quicker execution.

Cold start

It determines the delay during the starting invocation and the inactivity period, leading to longer response times than the warm executions.

Function as a Service

FaaS, or Function as a Service, acts as an integral component of the serverless architecture. Here, the individual functions are recognized as the primary execution units, which respond to the triggers and events.


It involves the running of different microservices and functions that help handle business processes and complex workflows.

Concurrency Limit

It signifies the total count of instances that execute in the singular region.

Benefits of the serverless architecture

In this section, we are going to talk about the benefits that serverless architecture brings for serverless saas application development:

The adoption of serverless architecture in business organizations is rising. A wide assortment of Azure, Google Cloud, and AWS consumers are adopting serverless architecture due to the following reasons:


The serverless apps are known to scale down and up automatically, depending on the incoming workload. Thus, they ensure that they can manage the fluctuating traffic without any kind of manual interruption.

Decreased operational overhead

The serverless architecture abstracts infrastructure management. Thus, it makes the developers free from all kinds of concerns and issues associated with server scaling, server maintenance, and server provisioning. It provides a suitable opportunity for the teams to concentrate and code, thereby delivering the features.

Event-driven flexibility

The serveless is considered to be a suitable choice for different serverless databases and  event-driven apps. Hence, it is an excellent option for different use cases like IoT solutions, chatbots, and real-time analytics, to name a few.


The functions in serverless apps are known to be highly granulated, thereby allowing maintainable and modular code. Every function is known to focus on a certain service or task.

Faster development

The serverless architecture helps promote faster deployment and development. Hence, the developers are capable of deploying and writing the functions faster, thereby enabling a quicker turnaround time for different apps and features.


The pay-as-you-go pricing indicates payment is made for the resources that are executed during the function executions only. Hence, you will not witness any kind of ongoing cost for different idle resources. So, it is considered an affordable choice for different widely used apps.

Building event-driven apps

The event-driven nature of the serverless architecture makes it the primary option for different apps that depend on real-time processing, thereby reacting to different events. It helps add value in the following manner:

Real-time analytics

It helps process the data streaming and produce visualization and insights, thereby allowing real-time analytics.

IoT data processing

The serverless functions are capable of processing the data from different IoT devices, such as trigger actions and sensory readings, depending on the data.

Alerts and notifications

The serverless architecture produces and sends the real-time alert and real-time notification, depending on the thresholds and certain triggers.

Virtual assistants and chatbots

The event-driven serverless functions manage external events and user interactions, thereby offering faster responses to actions and queries.

Building the APIs

Serverless is regarded as the constant option to create APIs, primarily for different apps with granular and modular needs. Such apps are inclusive of the following:


The serverless functions will function as microservices. It is known to handle unique tasks, database operations, and data processing.

API Endpoints

Every serverless function acts as the API endpoint. Thus, it helps simplify API maintenance, deployment, and development.


The serverless API endpoints scale to accommodate the enhanced API traffic seamlessly.

Customer business logic

The serverless APIs allow the custom business logic implementation to increase access control and data processing.

Authorization and authentication

The serverless functions run the authorization and authentication logic to secure different API endpoints.

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