Modern Web App Development

Gaining the Advantages & Navigating the Challenges

Today's app users demand performance, experience and intelligence

Web application development is a vital part of your business. If not yet, it will be, as the world goes further into digital. But what is the modern web apps development process all about? And how will it work for your business?

Modern web app architecture needs to be such that the end-product functions with speed and efficiency, and is secure & easy to maintain. It also needs to grow with your business. But there is no one-size-fits-all solution to meet you and your customers’ expectations. There are several factors you will need to take into consideration.

Why build a modern web app


Stay Fast & Flexible

Faster development is a major time- and resource-saver, but speed is crucial for users, too. Long load times mean lost customers. Speed and flexibility are essential benefits.


Stay Compatible

New technologies enter the market at a rapid pace. There’s only so much legacy software providers can continue to support. It’s important to stay up-to-date and compatible.


Save Time & Money

It’s all about the bottom line. Modern web app development is focused on making things simpler, faster and cheaper to maintain in the long run.

outsourcing web app development the right way

It worked for Fexco

Fexco, a leading Irish Fintech company, used the modern web app approach to replace legacy software and build impressive applications to transform their business.

By operating as an extended development team, Zartis engineers could share expertise and work in close collaboration with Fexco’s teams, maximising ROI and achieving excellence in cutting-edge software development. Take a closer look at the detailed case study to see how a modern approach to software development was their best solution.

Let's look a little deeper.

Amazon learned that every 100-millisecond increase in page load time resulted in a one-percent drop in sales.
-Amazon online experiment

Speed & flexibility

Cloud Computing

What is Cloud Computing?

Hosting your app in the cloud opens up a world of significant benefits, such as increased speed of development.

Cloud-based technologies give you access to virtually unlimited storage space and bandwidth. This means you can scale up in real time and save the time and resources required to buy and install equipment on-site. It’s also flexible because your employees can remotely access applications and data.

In what ways is cloud computing better?

It’s faster. It’s cheaper. It saves time by moving beyond the old ways of having to design, re-architect, test, migrate, then ultimately deploy.

Self-hosting legacy platforms cost time and resources with maintenance. Moving to cloud hosting opens up new possibilities like delivering quick POCs (proof of concepts) while giving clients global access to your systems and apps. It also keeps you ahead of innovation as storing an app on a service provider’s servers means you get immediate access to innovative features and tools.

What are microservices?

Microservices divide large software projects into smaller, independent modules. These modules communicate through simple APIs (Application Programming Interfaces). This means microservices perform better than monolith architecture because they are considerably faster for developing, testing and modifying. Amazon, Netflix, and eBay are among the innovative businesses taking advantage of this solution.

What makes microservices so attractive?

First, if there is a fault in a single module, it doesn’t affect the whole app. It also means you have the flexibility to experiment with a new technology stack on individual services, as and when needed.

Smaller code bases also make it possible to achieve quicker deployments. Not to mention that separate, smaller, more manageable services mean it’s easier to scale at the right time. Time-saving, money-saving, flexible.


Single-Page Applications

What are SPAs?

Single-page applications (SPAs) are growing in popularity.  While this is not the only route to take in modern web app development, the many benefits are definitely worth considering.

What are the benefits to SPAs?

First, SPAs allow for fast development and easier, effective maintenance, as they allow developers to focus on a modular approach to software engineering. This also leads to faster load times, quicker development of new features, simpler ways to experiment with A/B testing and cost savings with the potential to reuse code in other apps and products a company may need. Offline capabilities also make applications used in critical environments more robust. 

SPAs mean opportunities for great UX, providing a clean, easy-to-use, linear user experience. And when comparing SPAs and multi-page apps, we have found that when executed properly, SPAs have better conversion rates.

According to the CSC Cloud Usage Index, 82% of respondents saved money on their most recent cloud project.

software compatibility design by 2 software engineers

Compatibility & Software Integration

Choosing modern web apps can keep you from common pitfalls that come with maintaining legacy systems, including incompatibilities with upgrades and becoming more vulnerable to bugs and cyberattacks.

With modern web apps, automating any software integration becomes much easier. This saves you from juggling manual integrations and provides a more streamlined and optimised approach.

Benefits of Modern Web Applications

exchange of expertise in software

No need to build 2 separate applications

A progressive web application (PWA) is a modern cross-platform solution that functions effectively on both iOS and Android. It’s fast-loading, engaging, has offline capabilities and is easy-to-install. Building a single PWA means you don’t have to hire two different sets of engineers to build two separate apps that require different sets of code and technologies, and so on. You save big on time and costs.

hire extended development team members

Easily find and hire world-class talent

Traditionally, code written for legacy software is heavier, inefficient and more complicated. Maintaining and integrating these systems requires a substantial investment in time, effort and engineering talent. Depending on when the system was developed, you may discover that finding and hiring engineers capable of understanding the code and being willing to take on the job becomes much harder.

high return on investment from software initiatives

Avoid the costs of maintaining legacy software

Maintaining legacy systems is expensive. Modern web app architecture is designed to be simpler, quicker and cheaper to maintain. Opting to take on the risks of legacy software means that time is working against you. Software development trends move way too fast, and old code falls behind. This leads to other challenges like incompatibility, integration and development issues — exposing your system to security risks.

A study by Avanade found that modernizing your legacy software could lead to 14% increase in revenue.

Get to Know the Software Challenges Involved in Developing Modern Web Apps


Missing Native Device Features

With native apps, developers can use the full functionality of a device. Thus far, this has not been completely possible with progressive web apps. There are still several native device features missing, but as with all technology, things are evolving rapidly.


Microservices Can Bring Complexity

This is the primary negative of the microservices approach — the complexity of any distributed system. But these drawbacks can be addressed easily with the right automation tools and the right software engineers on the job.


Availability and Scalability

More than just one application, it’s the creation of several linked services, each of which has to function flawlessly. If one application becomes overloaded, it is possible to create and adjust to accommodate higher numbers of requests.

Strategic outsourcing can help companies lower innovation costs by 60 to 90%, shorten product cycle times and rake in ROIs of up to hundreds of times the initial investment.

modern web app development team of 3 engineers

So, is the future all about modern web apps?

Answer: maybe.

There is no standard recipe for success here. Different projects have different requirements, and it will take careful consideration and technical understanding to make the right decision for your project’s success. The enormous challenge when developing modern web apps is to meet needs now and for the future; though no-one is 100% sure what that will be.

Yet, the modern web app approach is looking really good. Everyone has a browser. The web’s open nature is an enormous advantage. It just makes sense. Stick with proven technology stacks and build for growth. We think modern web app development is a great place to start.