How To Build a Highly Available and Scalable Web Application on AWS

This blog post is essential reading for any developer looking to build a highly available and scalable web application on AWS. Get an in-depth look at the essential components.

JP Lorandi
December 9, 2022
illustration for outsourcing

With the rise of cloud computing, there is an increasing demand for highly available and scalable web applications. Amazon Web Services (AWS) provides developers with the tools they need to build robust web applications that can handle large amounts of traffic while maintaining high performance.

This post will provide an overview of the architecture design, infrastructure setup, security best practices, deployment strategy, monitoring and logging solutions, scalability options and other related topics for building a highly available and scalable web application on AWS. We recommend connecting with cloud Devops experts to discuss the nuances associated with each.

Architecture Design

The first step in building a highly available and scalable web application on AWS is defining the architecture design. This includes deciding which services will be used in the application, how they will communicate with each other, what resources are needed such as computing power and storage space, and how security will be handled.

The architecture should be designed with scalability in mind so that it can easily scale up or down depending on the needs of the application. By leveraging AWS services like EC2 instances (virtual servers), S3 buckets (storage), Lambda functions (serverless compute), DynamoDB tables (database), businesses can easily develop applications that scale up or down depending on their needs.

Additionally, it should be designed to provide high availability and fault tolerance by using multiple Availability Zones (AZs) within each region. This ensures that if one AZ becomes unavailable due to an outage or maintenance, services will still remain available in other AZs.

Infrastructure Setup

Once the architecture design has been defined, it’s time to set up the necessary infrastructure components. This includes setting up virtual machines (VMs), databases, storage systems, networking components such as Virtual Private Clouds (VPCs) and Elastic Load Balancers (ELBs), as well as identity access management (IAM). All of these components need to be configured correctly in order for the application to work properly.

Security Best Practices

Security is always a top priority when building any type of web application. On AWS, there are several security best practices that should be followed including setting up IAM roles and policies, configuring network access control lists (ACLs) and firewalls such as Security Groups, encrypting data at rest and in transit using encryption keys such as KMS or S3 buckets, monitoring activity logs such as CloudTrail logs for suspicious activity, deploying intrusion detection systems such as Amazon GuardDuty or third-party solutions like Splunk Enterprise Security etc.

Deployment Strategy

Once all of the necessary infrastructure components have been set up and secured properly it’s time to think about how you are going to deploy your application code to production environments. The most popular approach is using automated deployment tools such as AWS CodePipeline which allow you to easily deploy new versions of your code without having to manually upload them every time there is a change. It also allows you to quickly roll back changes if needed without having to redeploy from scratch again.

Monitoring & Logging Solutions

In order to keep track of how well your application is performing it's important to have monitoring tools in place so you can detect issues before they become critical—for this purpose there are many third party monitoring tools available such as Datadog or New Relic which offer features like real-time alerting if certain metrics exceed thresholds or anomaly detection if unusual behavior occurs in your system. Additionally, having proper logging solutions in place can help you debug any issues quickly—popular logging solutions include ELK Stack for centralized log aggregation or CloudWatch for collecting logs from various sources including EC2 instances and S3 buckets .

Scalability Options

Finally, it's important to consider scalability options when building an application on AWS—you should think about whether you need horizontal scaling where additional EC2 instances are added upon demand or vertical scaling where existing EC2 instance sizes are increased upon demand depending on the needs of your application at any given time.  

Building a highly available and scalable web application on AWS requires careful planning throughout all stages from architecture design through infrastructure setup all the way until deployment strategy and monitoring & logging solutions are implemented properly according to best practices standards established by Amazon Web Services itself.

Following this comprehensive guide will help developers achieve their goals more efficiently while minimizing costly mistakes along the way. By leveraging AWS’ powerful suite of tools developers can quickly build robust web applications that can handle high levels of traffic while maintaining high performance metrics across multiple regions worldwide without compromising security standards at any point during development lifecycle process!

No items found.

We are Azumo
and we get it

We understand the struggle of finding the right software development team to build your service or solution.

Since our founding in 2016 we have heard countless horror stories of the vanishing developer, the never-ending late night conference calls with the offshore dev team, and the mounting frustration of dealing with buggy code, missed deadlines and poor communication. We built Azumo to solve those problems and offer you more. We deliver well trained, senior developers, excited to work, communicate and build software together that will advance your business.

Want to see how we can deliver for you?

schedule my call

Benefits You Can Expect

Release software features faster and maintain apps with Azumo. Our developers are not freelancers and we are not a marketplace. We take pride in our work and seat dedicated Azumo engineers with you who take ownership of the project and create valuable solutions for you.

Industry Experts

Businesses across industries trust Azumo. Our expertise spans industries from healthcare, finance, retail, e-commerce, media, education, manufacturing and more.

Illustration of globe for technology nearshore software development outsourcing

Real-Time Collaboration

Enjoy seamless collaboration with our time zone-aligned developers. Collaborate, brainstorm, and share feedback easily during your working hours.

vCTO Solution Illustration

Boost Velocity

Increase your development speed. Scale your team up or down as you need with confidence, so you can meet deadlines and market demand without compromise.

Illustration of bullseye for technology nearshore software development outsourcing

Agile Approach

We adhere to strict project management principles that guarantee outstanding software development results.

Quality Code

Benefits from our commitment to quality. Our developers receive continuous training, so they can deliver top-notch code.

Flexible Models

Our engagement models allow you to tailor our services to your budget, so you get the most value for your investment.

Client Testimonials


Azumo has been great to work with. Their team has impressed us with their professionalism and capacity. We have a mature and sophisticated tech stack, and they were able to jump in and rapidly make valuable contributions.

Drew Heidgerken
Director of Engineering

We worked with Azumo to help us staff up our custom software platform redevelopment efforts and they delivered everything we needed.

James Wilson
Discovery Channel

The work was highly complicated and required a lot of planning, engineering, and customization. Their development knowledge is impressive.

Discovery Channel
Costa Constantinou
Senior Product Manager

Azumo helped my team with the rapid development of a standalone app at Twitter and were incredibly thorough and detail oriented, resulting in a very solid product.

Seth Harris
Senior Program Manager

So much of a successful Cloud development project is the listening. The Azumo team listens. They clearly understood the request and quickly provided solid answers.

Matt Sutton
Head of Product
Bento for Business

Azumo came in with a dedicated team that quickly grasped our problem and designed and built our data integration solution. They delivered a clearer picture for our business in a timeframe I didn’t think was possible.

Bento for Business
Sean Anderson
Chief Operating Officer

How it Works

schedule my call

Step 1: Schedule your call

Find a time convenient for you to discuss your needs and goals

Step 2: We review the details

We estimate the effort, design the team, and propose a solution for you to collaborate.

Step 3: Design, Build, Launch, Maintain

Seamlessly partner with us to confidently build software nearshore

We Deliver Every Sprint

Icon illustrating the advantage of time zone-aligned software developers from Azumo, ensuring work hours synchronized with client schedules.

Time Zome Aligned

Our nearshore developers collaborate with you throughout your working day.

Icon showcasing the advantage of hiring expert engineers from Azumo for software development services.

Experienced Engineers

We hire mid-career software development professionals and invest in them.

Icon symbolizing how Azumo's software developers prioritize honest, English-always communication for building quality software.

Transparent Communication

Good software is built on top of honest, english-always communication.

Icon representing how Azumo's developers enhance velocity by approaching software development with a problem solver's mindset.

Build Like Owners

We boost velocity by taking a problem solvers approach to software development.

Icon illustrating how Azumo's quality assurance process ensures the delivery of reliable, working code for every project.

Expect Consistent Results

Our internal quality assurance process ensures we push good working code.

Icon depicting how Azumo follows strict project management principles to stay aligned with your goals throughout the development process.

Agile Project Management

We follow strict project management principles so we remain aligned to your goals