Why Serverless Architecture Is Shaping the Future of Cloud App Development

How much time should be spent by the team developing useful applications and how much time should they spend managing the infrastructure required for running it? This is an issue that a lot of companies now think about while planning out their digital strategy. With the growing complexity of applications and the increased user demand, there has been an effort on the part of organizations to maintain their innovativeness without complicating themselves.

Cloud computing today has grown beyond mere application migration to creating an infrastructure which is robust, scalable, and efficient. Priorities for business have also changed. Companies are now more interested in cutting down on their operational costs, improving resource utilization and increasing efficiency rather than simply shifting to cloud migration.

This is resulting in a shift in paradigm for cloud application development. Rather than diverting engineering resources towards managing servers, load balancing or infrastructure which would simply sit idle for long stretches of time, firms are opting to build their applications in such a way that they can respond to the challenges posed by reality. Not only does this make the process easier but also allows them more time for innovation and enhancement of customer experience.

The serverless computing market around the world is expected to increase from USD 28.35 Billion in 2026 to USD 104.75 Billion by 2032, achieving a compound annual growth rate (CAGR) of 24.34%. The increasing adoption of cloud-native technologies, event driven applications, artificial intelligence, and digital transformations has kept this market expanding at such an accelerated pace.

Whether enterprises are building platforms for customers, enterprise applications, mobile apps, or latest APIs, architecture becomes an important factor in ensuring scalability, agility, and efficient operations. Serverless architecture has become one of the ways for companies to ensure these factors are simplifying the management of infrastructure, while allowing for faster development and deployment.

In this blog, we will be looking at what serverless architecture is, how it works, what makes serverless architecture tick, what are its business benefits, real life examples, and scenarios where it may or may not be the right choice.

What is Serverless Architecture?

"Serverless" does not imply that there are no servers at all. The only thing that happens is that there are no servers under your control anymore. The provision, management, scaling, security, maintenance of the shifts are the responsibilities of your cloud service providers, whereas the code remains yours.

At its core, serverless computing is a cloud execution model in which the code executes when it is triggered by events such as an API call, change in database, file upload or user activity. Rather than having the servers run indefinitely, the cloud platform allocates the needed resources, executes the task at hand and frees up the resource immediately after the task is done. In this sense, serverless computing is an important aspect of cloud computing, facilitating scalability and efficiency in applications built using the technology.

Within serverless, two models work together but target different issues:

• Function as a Service (FaaS)

Programmers create functions separately, which are triggered by specific events. All operations such as managing the infrastructure, scaling, and runtime are performed by the cloud service provider. Applications can handle their requests through FaaS without requiring any server.

• Backend as a Service (BaaS)

Rather than developing a full backend from scratch, developers use managed cloud services like databases, authentication, storage, notifications, and analytics. It minimizes the effort put into coding, as the developers get to use pre-developed backend functionalities.

FaaS and BaaS are used jointly in many modern applications. The former focuses on application business logic, while the latter offers backend functionalities.

How does Serverless Architecture Work?

The serverless architecture is based on an event-driven architecture whereby the code is executed only when a certain event takes place. In the conventional way, a developer would deploy the whole application in a particular server. In serverless computing, developers design small pieces of the function.

1) Create the Function

Programmers develop functions which carry out certain actions such as making payments, validating users' inputs, and sending notifications. Each function is created in a manner that makes it focus on one task only in Function as a Service (FaaS).

2) Upload the Function to a Cloud-Based Platform

The function is uploaded to serverless computing platforms like Amazon Web Services Lambda, Microsoft Azure Functions, and Google Cloud Functions. The cloud service provider takes care of the whole infrastructure including the operation system and updates of the function.

3) Occurrence of the Event

As opposed to conventional applications that run all the time, serverless applications execute themselves only in response to an event. An event could be a call to the API, uploading of a file, updating a database, scheduling, or messages from another application. This approach to event-driven computing ensures that there are no wasted resources.

4) Executes Within a Transient Runtime Environment

The moment the function gets triggered, the cloud platform sets up a transient runtime environment within which the serverless function executes. The fact that serverless functions are created to be executed statelessly means that no data remains after executing a function.

5) Auto-Scale

In case there are several requests at once, the cloud platform will automatically create more instances of the function to process the load. Once the load goes down, the instances will be terminated automatically.

6) Pay Only for What You Need

Once the function finishes its job, the execution context will be stopped and freed from resources. The company is billed not for reserved capacity but for the actual execution time and used resources.

Leading Serverless Cloud Platforms

Selection of a suitable serverless platform can be determined by factors like your cloud ecosystem and application demands. Below is a brief comparison of the various popular serverless platforms. 

What are the Benefits of Using Serverless Computing?

Without the burden of the infrastructure being on the team’s plate, the benefits are experienced in multiple areas such as cost, time, and dependability at once. Let’s have a look at some of the benefits: 

• Cost Optimization

When using serverless computing, organizations get billed solely for the compute power consumed while executing functions rather than provisioning servers that run all the time. The pay-as-you-use pricing structure helps lower the cost of infrastructure, especially for those applications with varying or unanticipated loads.

• Auto-scaling

The serverless cloud services automatically adjust the amount of resources allocated according to the incoming request. The applications are capable of dealing with unexpected surges of traffic without any human interference.

• Development Cycle Speed Up

As developers don’t have to configure and manage any infrastructure, they can concentrate on coding and developing new functionality. This results in faster development cycles and deployment, helping organizations deliver their products to market faster.

• Increased Reliability

The best cloud computing companies create a serverless architecture that is tolerant of failures and capable of automatic failover. In case of the execution environment failure, new instances will be launched automatically.

• Lower Operational Effort

Activities like server deployment, OS upgrades, patching, and capacity management are performed by the cloud vendor itself. This ensures that developers and IT personnel can focus more on innovation and application development.

• Built-in Security and High Availability

Popular cloud computing frameworks offer features like identity and access management, encryption, monitoring, and compliance in the form of security to serverless applications. Additionally, applications will also have the advantage of high availability due to the built-in nature of cloud infrastructure.

Examples of Serverless Architecture Across Modern Applications

The serverless architecture model can be applied in many types of applications since it is quite flexible. It can be used by businesses for developing scalable and event-driven applications without worrying about the infrastructure underneath.

• SaaS Applications

The serverless paradigm allows SaaS companies to develop multi-tenant applications which can scale themselves depending on the increase in the number of users. Moreover, the serverless model facilitates deployment of features, API-based services, and optimization of costs for infrastructure through the allocation of resources on-demand.

• Web Applications

The current web applications utilize the serverless function concept where requests from users are processed, authentications performed, backend APIs managed and business logic is executed. The process ensures increased scalability without requiring management of servers and infrastructure.

• IoT Back-end Systems

IoT environments create constant streams of data from connected devices. The serverless system is capable of processing the event data in real-time, initiating workflows automatically, and connecting with analytical systems, thus making it ideal for use in IoT environments, smart devices, and applications.

• Backend of Mobile Applications

Most mobile applications depend on serverless backends for authentication of users, sending notifications, storing files, databases, and APIs. Developers are able to develop applications that have the capability to cope with unpredictable user traffic using serverless backends.

Real-World Applications for Serverless Implementation

The serverless model does not only exist in startup companies but in large enterprises as well. It has been used by many companies across the globe to run their important processes or applications and increase efficiency and scalability. Some of these are as follows:

1) Netflix

Netflix implements the use of AWS Lambda for automation of cloud computing, media processing, and management of infrastructure. Through implementation of the event-driven architecture of serverless computing, the firm has automated manual operations, increased reliability, and allowed its engineering teams to concentrate on ensuring a smooth streaming process.

Whenever a new application is launched, serverless computing functions can automatically verify the security policies and perform infrastructural checks without using servers.

2) The Coca-Cola Company

Coca-Cola has adopted serverless architecture in the backend of its ecosystem of vending machines that are interconnected. This makes it easy for Coca-Cola to process transactions and collect real-time operational data without having to rely on always-on backend servers.

When a consumer buys drinks using a smart vending machine, the serverless application will help process payments, update inventory, and synchronize transactions in the cloud.

3) iRobot

iRobot utilizes serverless architecture for enabling communication among millions of Roomba units which are connected to its cloud services. The event-driven method allows scaling based on activities performed by the devices, and it makes operation more efficient as well as minimizes infrastructure management.

Once a Roomba finishes its cleaning task, it sends performance data to the cloud, where serverless functions process that data, update the user's application, and send maintenance alerts if required.

4) Nordstrom

Through the use of serverless technology, Nordstrom provides many event-driven applications that include customized retail services like product recommendations and personal shopping experiences. Through this approach, Nordstrom is able to process consumer interaction in real-time while ensuring efficiency in its back end processes.

When a customer is browsing through products or purchasing a product, a serverless function executes personalized recommendations in real-time.

Key Limitations to Consider for Serverless Architecture

Although serverless architecture has a number of great solutions, this architecture is not suitable for all kinds of workloads. Being aware of these limitations will help organizations choose the right architecture for their application.

• Long-Running Workloads

The serverless architecture is optimized for small tasks that can be executed in a short period of time. It is not recommended to use such an architecture for applications that run constantly or require long-running calculations.

• GPU Intensive Computing

Training machine learning models, video rendering, and other GPU intensive operations generally necessitate dedicated computing power. Such processes tend to perform better using specialized computing facilities compared to serverless functions.

• Low Latency Applications

There is a chance for applications requiring consistent low latency to face some lag as a result of cold starts, particularly in cases where the function hasn’t been called recently.

• Vendor Lock-in

Most serverless applications use services that are cloud vendor specific. Proper planning is required for any migration to occur easily and without wasting much time.

• Debugging and Observability

As serverless applications consist of many functions and services, request tracing and debugging can be quite difficult. Logging and monitoring tools are crucial for such applications.

• Stateful Processing

The serverless functions by nature do not maintain any state information because they are stateless. In applications where persistent state is needed, external databases have to be used.

What are Some of the Best Practices for Building Serverless Applications?

Adherence to established development methodologies can help firms enhance their performance, ease maintenance tasks, and leverage the benefits of serverless computing.

• Keep Functions Small and Specific

Ensure that each function executes only one operation. Small functions are easier to maintain, test, scale, and apply to different applications.

• Design for Stateless Execution

Keep application data in an external database/storage rather than storing them in the memory of the functions. This enhances scalability and guarantees consistency of execution.

• Implementing Robust Security Controls

Use least privilege principles, employ secure APIs, encrypt sensitive information, and use secrets management solutions to reduce potential security threats.

• Monitoring Application Performance

There are centralized logging, monitoring, and distributed tracing tools that can be used to identify performance issues and optimize applications. 

• Automation of Deployment with CI/CD

There is a need for infrastructure as code and CI/CD pipelines to facilitate smooth deployments.

How Hyperlink InfoSystem Assists Organizations in Building Serverless Cloud Applications

Implementation of serverless architecture involves the identification of the appropriate workloads, the design of an architectural model according to organizational goals, and scaling of applications without any security concerns.

Being a custom software development company, Hyperlink InfoSystem assists in planning, development, and modernization of the serverless solutions according to the organizational requirements. Our team analyzes the current applications, determines the workload for serverless deployment, and develops migration plans that prevent any disruption. We build the solutions starting from API development, event driven architectures, and up to cloud-native application development.

Apart from development activities, our cloud managed services and DevOps help you in deployment, automation of delivery pipelines, monitoring of application status, and optimization of cloud infrastructure according to changing organizational needs.

Make Your Cloud Architecture Future-Proof with Serverless Architecture

The emergence of serverless architecture has revolutionized the modern application development process, but it does not mean that everything should be replaced by serverless architecture. The most important aspect is that you need to make the right choice when it comes to workload selection and align your business objectives accordingly with the right architecture.

A number of businesses can benefit a lot from the use of hybrid architecture in which serverless architecture is combined with containers, virtual machines, or any other cloud service to deliver the best possible solution to their needs. With digital transformation becoming a priority for businesses these days, the right choice of architecture strategy will become highly important for success.

Have plans regarding serverless architecture or modernization of your current apps? Get in touch with the team at Hyperlink InfoSystem.