Hosting a website on a server can be like buying a crate for your new puppy. Sure, your puppy might fit now. But in a few months, you’ll be back at the pet store looking for the next size up. Depending on how fast your puppy grows, you might have to repeat this trip again. And again.

You might face similar issues with the server hosting your site. As your site grows, you’ll have to spend more and more time provisioning, managing, or upgrading your server to ensure your site keeps running smoothly. This will leave you less time to spend actually developing code.

What if, instead, you could focus solely on writing code and get someone else to handle the operational infrastructure of your site?

That’s the idea behind serverless functions. These single-purpose, programmatic functions are hosted and maintained on infrastructure by cloud computing companies.

Because these companies automatically add server capacity when you need it and then take it away when you don’t, you don’t have to worry about maintaining and scaling servers to fit the evolving needs of your website or application. Instead, you can concentrate on creating newer and better products in less time.

Going serverless can also be cost-effective since most platforms have a pay-as-you-go model. That means you only pay for the server resources you use, rather than having to eat the cost of unused resources at the end of your billing cycle.

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Before we take a look at the major cloud providers in the serverless architecture market, let’s take a closer look at how you might already be benefitting from serverless functions.

Serverless Functions

Many platforms have begun extrapolating smaller pieces of their backend code and moving it to serverless functions. This marks a huge shift in the software development community.

Historically, platforms have been monolithic. Meaning, they had large, unified codebases. That meant any time you added a new feature, or even fixed a bug in a single line of code, you had to deploy the entire platform to ship the new code.

With serverless functions though, you can develop any new functionality or security patch as a completely isolated, single-purpose piece of code. All you have to do is set this function to be automatically triggered by an event — like in-app activity, website clicks, or image uploads — and your cloud provider will execute the code on your behalf.

This not only makes the deployment of new code quicker, simpler, and easy to automate — it also significantly decreases the possibility of downtime during a deploy. In short, serverless functions improve the performance of your application and the experience of your developers and customers.

Recognizing the value not only to themselves but to their customers, platforms like the HubSpot CMS have begun offering serverless functions.

Let’s say you’re a HubSpot CMS Enterprise user and run a fitness site. Using serverless functions, you can allow visitors to view upcoming classes and register for them (or sign up for a waitlist) directly on your site. You don’t have to manually keep track of sign-ups or set a class to full capacity or anything — just write the backend code and set it up to be triggered when a visitor fills out a registration form. HubSpot will do the rest.

Now let’s look at some public cloud hosting companies that have serverless platforms.

Serverless Architectures

The global serverless architecture market is expected to be worth $19.84 billion by 2025, according to data from Grand View Research. Below we’ll take a look at the serverless portfolios of some of the biggest vendors in the market.

1. AWS Lambda

Introduced in 2014, Lambda from Amazon Web Services is an event-driven, serverless computing platform that allows users to run code without provisioning or managing servers.

Users can run code for virtually any type of application or backend service with zero administration. Once they upload their code and set it up to automatically trigger from either other AWS services or directly from their website or mobile app, Lambda takes care of everything required to run and scale the code with high availability.

AWS Lambda homepage


2. Google Cloud Functions

Released in 2018, Google Cloud Functions is a serverless function environment on the Google Cloud Platform. As with AWS Lambda, users simply have to write their code and set it up to trigger from other Google Cloud Services or from their application. Google will handle the rest from there. This platform is ideal for setting up functions for data processing, like retrieving relevant data from images and videos.

3. Microsoft Azure Functions

Introduced in 2016, Azure Functions is the serverless computing service hosted on the Microsoft Azure public cloud. What sets Azure apart from the other platforms is that it provides an easy-to-use web interface where users can write code. Azure Functions is ideal for tasks like image processing, order processing, and file maintenance.

Azure functions homepage


Go Serverless Today

Serverless is the future of software development. By using serverless functions on your site, you’ll reap the benefits of reduced server expenses, auto-scaling, and improved uptime.

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Originally published Feb 13, 2020 5:34:53 PM, updated February 13 2020


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