Web Application Architecture in 2024: Best Practices & Trends

You can’t develop and then launch a web product successfully without knowing all about web application architecture. Web architecture will ensure your product works properly and reliably. 

Learning only the basics, though, isn’t enough to develop a web app that’s world class. With new software engineering approaches and technologies emerging continuously, new web application architecture trends are being discovered every day.

Below, we discuss these trends and best practices in web application architecture that can help you create an app with a solid platform foundation.

What is web application architecture?

Web application architecture is an interactive model of the web app’s various components. The architecture will allow for a well-formed app that is efficient, reliable, secure, and scalable. Most architectures will consist of two primary components:

• Front end (user side). This is the visible part of the web app that users interact with. It includes interactive forms, web pages and any other element that users directly experience. Javascript leads the way for front-end programming languages. Veu.js, React and Angular and React are some of the most common frameworks.
• Back end (server side). This is a hidden part of an iceberg where data processing happens. The back end includes the app’s servers and databases, and manages data retrieval and storage, managing connections for users and all computations. Some of the top back-end languages are Python, Java, PHP and Ruby.

Programmers typically develop apps with three layers (or tiers) — presentation, application and data access. Each is an essential app function that can be upgraded/replaced independently. This approach to app development enables engineers to develop web applications that are more scalable, efficient and secure.

Forms of web based application architecture

In the world of web based software development, there are several common architectural patterns that are predominantly used. Each has it’s respective strengths and weaknesses. Now, let us define some of the more popular types of web application architecture.

• Single-page applications (SPA). This type of web application is architected to show relevant content on one page, and change dynamic content based on requests from the user. In other words, SPAs do not look at the server for loading new pages, but only for information to collect. This will allow for a smoother performance for the user, creating a better and seamless experience.  Some of the negatives of single-page style applications, are expending more time on testing the application and showing little speed the first time you load your web application.  
• Progressive web applications (PWA). Progressive web apps are one of the latest and most promising trends in the world of web app development. In this form of architecture, users gain the advantages of web applications (as well as app performance), as the users will experience mobile apps, that leverage the use of the user’s devices storage, but without needing to download anything to their devices. PWAs can run offline, as well as being able to send push notifications, and use device APIs (some PWAs can run as desktop application). The downsides of this architectural form is limited browser support and limited native API usage.
• Serverless architecture. Serverless architecture allows multi-platforn developers to outsource some, if not all, of the processes, like server or viabity, to a cloud-based solution like AWS or Azure, and reduce costs. When serverless architecture is used properly, the development team can focus on the UX/UI, website design, as well as other aspects of front-end development. As of today, there are few fully serverless web applications, but more and more companies are recognizing serverless architecture, at least for partial use of the app/processes. Some companies find risk with security in terms of using serverless architecture, while others find serverless architecture complicated.
• Monolithic architecture. Monolithic architecture is the most traditional architecture. Monolithic architecture means that an entire app is written as one unit. This architecture promotes better cost and better/deployment. It is easier to use application development framework, test tools or templates when an application uses monolithic architecture, because everything is viewed as one application. Like every application architecture model, monolithic architecture has its disadvantages. If one component of an application fails, it is also reasonable to assume that every other component will fail as well. Scalability is a problem for monolithic web applications and could also be an issue.
• Microservices. This architecture is generally the best choice for complicated, big web applications. A web application with a microservices architecture can take advantage of varying functionalities, which makes testing and maintenance much simpler. Also, microservices architecture has more scaling. It is pretty easy to find a well-known web application that uses microservices architecture. Netflix, eBay, and Amazon all use microservices with their applications. Disadvantages of microservices include debugging, and deployment complexity. 
• Containers. Containers, which are lightweight and portable, allow an application to move between environments and run automatically. Containers give an application environment consistency and make deploying and managing web applications easier. The use of containers become popular as part of microservices, however many developers are now designing entire architectures around containers.

Primary directions in web application architecture

Technologies always change, and web-based application technologies are no exception. A clear understanding of the primary trends in web app architecture combined with a MVP development company perspective, will help secure great digital products.

• Cloud technologies. Cloud storage services have been an important part of web app development for quite a while. They offer simple and inexpensive methods for data storage, file hosting, and content delivery. Now cloud-native technologies are more significant than ever. Docker and Kubernetes (for containers) and Amazon Web Services, Azure and Google Cloud (for more than 100 services) create power, abilities to support web development. Applications relying heavily on cloud technologies greater scalability and resilience.
• More emphasis on user experience. The web apps development business is competitive, so a main trend is focusing on advanced programming methods on the client-side and combining that with shrewd principles for web design. The application of AI technology, serverless models and frameworks such as Veu.js and React all simplify the process for developers so they can offer their users apps that are more user-friendly and intuitive.
• Focus on security and issues of compliance. The emergence of new, sophisticated cyber threats has placed a heavier emphasis on implementing good cyber defense techniques, standards, and compliance requirements in web application design and construction. For all engaged in designing and implementing web applications with a good cyber defense posture, IT professionals are likely to have to be involved in building in encryption, implementing authentication, and addressing compliance to international standards, such as the General Data Protection Regulation (GDPR), Health Insurance Portability and Accountability Act (HIPAA), etc. Blockchain technologies are likely to play a large role in cyber security in the next few years.
• Increased Use of Artificial Intelligences (AI) and Machine Learning (ML). The design and programming of web application will be dependent on the increased use of artificial intelligence and machine learning. Many of these applications (for example, AI coding tools) are already being used in web site design, and that trend will continue to increase over time. The use of artificial intelligence and machine learning systems within web applications can improve user experience, automate a task or process, and make the application more responsive to use. Much like the former section, and especially with the efforts of developers (and want-to-be developers) since the turn of the century and even more so today as they engage to use AI based techniques in their client-side programming, machine learning is functioning now and is becoming the standard form of art media. For those individuals looking to learn about AI and machine learning, there are numerous machine learning courses for professionals that can be used to learn some useful insights on learning how to use these. Many of these courses discuss a wide variety of topics including natural language processing, and MLOps (to assist in deploying an AI application).
• The continued rise of progressive web apps. Progressive web apps (PWAs) are already in demand and will only increase in popularity. With the characteristics of a web application and a mobile application, progressive web apps are advantageous when looking to improve user engagement and user experience. As of today, there are several social media, eCommerce, and news websites using the PWA model to increase users. 
• Low-code and no-code web app development. Statista predicts global low-code platform revenue to reach 65 billion dollars by 2027. Many individuals lacking web development experience will use low-code and no-code technologies (e.g., development frameworks) to add small amounts of code or create an MVP. But in a few short years, we will see the emergence of entire web application architectures being created by these tools. This will help organizations reduce technical debt (i.e., avoid spending money on web developer’s salaries). However, in the world we live in today, low-code and no-code solutions are still not fully functional for complex applications, and possess little scalability and flexibility. 

Web application architecture best practices

On the basis of the key trends observed in the web application architecture, we can formally recommend the following best practices for you to follow to improve performance and to assist in the security and scalability of your app. 

• Constantly consider security. You must introduce cyber security at every tier of the application architecture from the beginning. When you are developing the web application consider secure coding practices, perform regular audits, and utilize access control security policies with proper authentication and authorization process to indicate restrictions. By taking these precautions, you can alleviate a great deal of future pain against harmful cyber attacks. 
• Utilise microservices and serverless architecture. We’ve already indicated (in the previous module) that serverless and microservices are some of the most popular models of application architecture today, and for good reason. They allow for enhanced scalability and flexibility of your app. Additionally, using cloud services rather than on-site hardware will allow you to save money and focus more time on the other facets of app development. 
• Consider performance as critical. It’s crucial that your application architecture is optimized efforts to assure speed and efficiency is essential. Consider utilizing caching, load balancing. Consider optimizing database behaviour and avoid latency. Faster and more responsive apps improve user experience and user engagement, which is key in today’s competitive market.
• Plan for scalability. Developing web application architecture with anticipated growth in mind will configure your product to be agile to withstand changing business and tech trends. To make it scalable, leverage cloud services, containers, and web application design patterns that make updates and changes seamless. Another way to streamline the process of web application development is to use prompt engineering tools. These tools help developers produce optimized code, automate repetitive tasks, and function at increased productivity levels for a more robust and scalable application.

Conclusion

Every business owner and aspiring app creator needs to understand web application development. Starting with an application’s architecture is the perfect place to begin. Having a deep understanding of the fundamental types of web app architecture, trends, and best practices will meaningfully increase your potential for success in this exciting and competitive environment.