Web applications – what are they and why should you implement them?

Digitalizing processes doesn't have to mean implementing complex software installed on employee computers. Many tasks can be accomplished using applications accessible directly in a browser. Web applications not only allow you to provide online services but also automate processes, integrate them with other systems, and increase service availability. How do they differ from web portals, how do they work, and when can their implementation truly improve an organization's operations?

A web application is modern software that users access via a web browser. It doesn't require installing a dedicated program on each computer—all you need is access to the application's address, login credentials, and the appropriate permissions. What does this mean in practice? Users can use the application on various devices, and the organization can centrally manage its operation and development. Such solutions can be used for simple tasks, such as managing forms or reservations, but also support more complex business activities, such as B2B sales, customer service, internal communication, or process management.

A key advantage of web applications is the ability to centrally manage the system and data. Users use a single, common version of the application, and changes and updates can be implemented without having to install them on individual devices. This facilitates the development of the solution and the efficient rollout of new features.

Table of contents

Web applications – what are they and why should you implement them?
  How does a web application work?
    What are the components of a web application?
  Web application vs. website – What are the differences?
  Web, desktop, and mobile applications – what's the difference?
    Web or desktop application? 
    Web or mobile application? 
  How to choose an application for your business needs? 
    What are some examples of web applications? 
    Applications of web applications in various sectors
  Why is it worth implementing a web application? 
  Key benefits of using a web application
  How much does it cost to create a web application? 
  When is it worth implementing a web application? 
    How to plan a web application implementation?
  Data protection and web application security
  Summary
FAQ

How does a web application work?

A web application runs in a browser, much like a regular website. However, that's where the similarities end. While a traditional website primarily serves to present content, an application allows the user to perform specific operations, process data, and execute processes.

In simple terms, a web application works as follows:

1. Access to the application via a browser – the user launches the application in a web browser, without the need to install dedicated software on their device. If the application requires authentication, access is gained after logging in. 
2. Forwarding a request to the application server – performing a specific operation, such as searching for data, submitting a form, or submitting an application, results in a request being sent to the server running the application.
3. Processing the request – the application analyzes the received data and performs specific actions according to its functions and established business rules.
4. Data access and integration with systems – depending on the operation being performed, the application can retrieve or save information in a database, or exchange data with other systems. 
5. Forwarding a response – after completing the operation, the application forwards the response to the browser. The user can view, for example, search results, application confirmation, updated status, or a generated document.

From the user's perspective, the entire process takes place in one place – the browser. All application logic, data processing, and communication with other systems remain with the solution the user is connecting to.

What are the components of a web application?

An application consists of interoperable layers that allow the user to use specific functions and execute processes. In a simplified approach, we can distinguish between the presentation layer, the application layer, and the data layer. Depending on the needs, the solution can also be integrated with other systems and supplemented with security mechanisms.

It's important to emphasize that not every web application needs to have an identical architecture. The scope of individual layers and how they are interconnected depends on factors such as the solution's functionality, the project's scale, the number of users, security requirements, and the need for integration with existing systems. Only a properly designed architecture allows the application to evolve with the changing needs of the organization, without having to redesign the entire solution.

Web application vs. website – What are the differences?

A website and a web application may look similar, but they perform different functions and provide different user experiences. While a website primarily serves to present content and information, a web application allows users to perform specific operations, work with data, and implement processes.

However, the line between a website and a web application isn't always clear. Modern websites can offer an increasing number of interactive features, and web applications can include extensive information modules. The solution we're dealing with is primarily determined by its function.

Web, desktop, and mobile applications – what's the difference?

Web applications aren't the only way to create digital tools for managing processes and services. Depending on an organization's needs, desktop or mobile applications can also be used. For example, a web application runs via a browser, a desktop application is installed directly on a computer, and a mobile application is designed for devices such as smartphones and tablets. Individual solutions differ not only in access methods but also in technical capabilities, update methods, and the scope of use of the device on which they run. Understanding these differences allows for a better assessment of which approach will be appropriate for a specific process, user group, and business requirements.

Web or desktop application?

The primary difference lies in how the software is used. A desktop application must be installed on a computer and runs within a specific operating system. A web application runs in a browser, eliminating the need for the user to install a dedicated program.

The web model can be particularly beneficial when the system is used by multiple people, working on different devices or in different locations. Centralized application management also facilitates implementing changes and sharing the current version with all users. A desktop application, on the other hand, can be useful for solutions requiring intensive use of computer resources, extensive integration with the operating system, or operation in conditions with limited network access.

Web or mobile application?

A mobile app is designed with smartphones and tablets in mind, specifically for their specific user experience. It can leverage device features such as the camera, GPS, notifications, and biometrics. It is installed on the device and typically distributed through an appropriate app store.

A web app provides greater device independence. Users can use it on a computer, laptop, tablet, or smartphone, provided the solution has been designed with the specific device and browser in mind.

The choice between a web app and a mobile app should therefore primarily consider how the solution will be used. If users primarily need access to the system from various devices and perform more complex processes, a web app may be the right solution. However, if mobility and the use of smartphone or tablet features are key, developing a mobile app may be justified.

How to choose an application for your business needs? 

There is no single, universal application model suitable for every organization. Web, desktop, and mobile applications address different needs and can be used in different scenarios. When choosing a solution, it's important to consider the user's workflow, the type of processes supported, security requirements, the need for integration with other systems, and the scope of device functionality.

In many cases, solutions don't have to be mutually exclusive. A web application can serve as the primary process management system, while a mobile application will supplement it with features designed for field users. Therefore, the choice of technology should be driven primarily by the business goals and requirements of a specific process, not the type of device on which the application will run.

Jakie są przykłady aplikacji webowych?

Web applications can support various areas of an organization's operations – from customer and business partner support, through internal communication, to the implementation of services and administrative processes. Their functionality is designed based on user needs and the intended purpose of the solution. Therefore, a web application can be anything from a relatively simple tool for a specific activity to a complex platform integrating multiple processes and systems.

• B2B platforms – enable organizations to digitally manage collaboration with business partners. These can include placing orders, accessing individual offers and price lists, exchanging documents, checking statuses, and accessing collaboration data.
• Self-service portals – allow customers, employees, or other users to independently perform specific tasks. Depending on their purpose, they can be used, for example, to submit requests, update data, download documents, or check the status of a case.
• Intranets and employee portals – provide employees with access to information, documents, and internal organizational services. They can also support processes such as submitting requests, handling employee matters, and booking resources.
• Web-based customer service systems – support the registration and processing of requests, communicating with customers, and monitoring the status of cases. They can also provide customers with selected self-service features.
• Sales and ordering platforms – allow users to browse offers, place orders, manage their fulfillment, and check the status of purchases. B2B solutions can also incorporate individual terms and conditions, price lists, and authorization scopes. 
• Applications supporting document workflow and business processes enable the digital implementation of processes requiring information transfer, approval, or control of subsequent stages. These applications can support, for example, electronic submission and approval of applications, document management, or case monitoring. 
• Applications for providing electronic services enable the transfer of selected services to an online channel. They can handle, among other things, reservations, form and application submission, document transfer, payments, and status checks.

Applications of web applications in various sectors

Web applications are used in many areas of economy and administration. They can support both internal organizational processes and services targeted at customers, citizens, students, and business partners. Their functions are always tailored to the specific needs of each sector and user.

• Business – Web applications support customer and partner service, sales, and internal processes, among other things. They can take the form of B2B platforms, self-service portals, intranets, or systems supporting document flow and business process execution.
• Public sector – Web solutions enable the transfer of administrative services to electronic channels. They can be used for applications and case management, appointment booking, document sharing, and providing citizens with access to online information and services.
• Universities – Web applications support student, candidate, faculty, and administrative staff services. They are used for applications, communication, and administrative processes, among other things.

In each of these applications, the application can be integrated with other systems used by the organization. This allows not only for providing specific functions to users but also for ensuring the smooth flow of data between individual elements of the IT environment.

Why is it worth implementing a web application?

A web application can streamline an organization's daily operations, especially when it's necessary to provide multiple users with access to the same data, support repetitive processes, or facilitate collaboration between different systems. Its advantages extend both to user convenience and to organizational management.

• Access from various locations and devices – the application is accessible via a browser, allowing users to use it on various devices, wherever they are. This is particularly important for distributed work and processes carried out off-site.
• No installation required – the user does not need to install the program on their computer or device. This facilitates sharing the application with a larger number of people and reduces the scope of implementation efforts at individual workstations.
• Central management – ​​the application is maintained in a single environment, significantly simplifying its management. All updates and functional changes can be implemented centrally, without the need to modify each user's device individually.
• Process automation support – the application can take over repetitive activities, delegate tasks between process participants, monitor their execution, and generate specific information and documents. This reduces the number of manual tasks.
• Integration with other systems – the application can exchange data with systems already in place within the organization. This eliminates the need to repeatedly enter information into different tools, and allows users to access the data needed to complete the process in one place.
• Scalability – the solution can be expanded with additional features and integrations as the organization's needs change. This means the application doesn't have to be a closed tool that responds solely to current requirements.

Key benefits of using a web application

The use of web applications can bring tangible benefits to an organization that go beyond the mere digitization of a single process.

• More efficient process execution – automating repetitive tasks reduces the time required to complete tasks and reduces the risk of errors resulting from manual data processing.
• Optimizing customer service costs – moving selected activities to a digital channel reduces employee involvement in repetitive customer service activities. Users can independently perform specific operations, verify information, or download necessary documents.
• Greater availability of services and offers – a web application can provide users with access to selected features and services regardless of the organization's operating hours. In the case of sales or self-service solutions, this means the ability to address customer needs even outside of traditional contact channels.
• Faster customer and partner service – access to current data, automation of some activities, and streamlining the process can shorten the time needed to complete matters. This translates into more efficient communication and can positively impact the experience of customers and business partners.
• More efficient resource utilization – reducing the number of repetitive tasks allows for better utilization of employee time and skills. Automation can take over routine tasks, leaving teams more space for activities requiring analysis, decision-making, and direct customer engagement.
• Improved organizational efficiency and competitiveness – digitalization and process optimization allow for faster response to changes and the adaptation of service delivery to user expectations. Web-based solutions can thus support not only ongoing operations but also organizational development and competitive advantage.

How much does it cost to create a web application?

There is no single, universal price for developing a web application. The cost depends primarily on the functional scope of the solution, the number of users, the complexity of processes, and the number and type of integrations with other systems. Requirements for security, performance, scalability, and further application development also play a role.

The total project cost includes more than just programming. Depending on the nature of the solution, it also includes analysis of needs and processes, interface and architecture design, testing, implementation, and subsequent system maintenance and development.

What specifically influences the cost of a web application?

1. Functional scope – the more functions and processes supported, the greater the scope of design, programming, and testing. A simple application performing a few specific operations will require less effort than a complex system supporting multiple business processes. 
2. Process complexity – the cost will increase with the complexity of the business logic. Multi-stage processes, different service paths, approval mechanisms, and an extensive authorization system require more effort.
3. Integrations with other systems – the need to exchange data with ERP, CRM, financial systems, databases, and external services increases the scope of the project. Both the number of integrations, the communication method, and the scope of data exchanged are important. 
4. User interface and experience – an application can utilize a simple, standard interface or require a custom UX/UI design tailored to different user groups and devices. 
5. Security and authorizations – solutions processing sensitive data or providing access to critical business processes may require additional mechanisms for authentication, authorization, access control, transaction logging, and infrastructure security. 
6. Performance and scalability – an application designed for a small group of users has different requirements than a platform used by thousands simultaneously. As the solution scales, the architectural and infrastructure requirements increase.
7. Maintenance and further development – ​​the project costs don't end with the application's launch. Maintenance, updates, monitoring, user support, and the development of additional features must also be considered.

In practice, the cost of an application should be determined based on an analysis of the specific project, not solely on the number of screens or features. Two applications with a similar number of modules can significantly differ in effort if one requires a simple form while the other requires integration with multiple systems and support for complex business processes.

When is it worth implementing a web application?

A web application is particularly useful when an organization needs to provide multiple users with access to a shared work environment, organize data, or streamline processes. It's also a good solution for distributed teams, the need to integrate multiple systems, automate repetitive tasks, or launch a customer or partner portal. It's also worth considering if an organization is expanding B2B sales, wants to provide self-service features to users, or needs to centrally manage a single solution.

How to plan a web application implementation?

Implementing an application requires more than just selecting technology and preparing software, and the entire process can be divided into several key stages.

• Needs and process analysis – defining business goals, identifying the processes the application will support, and understanding user needs and expectations. Functional and technical requirements are also established at this stage.
• Solution design – preparing the application concept, its architecture, and the operation of individual functions. The design also includes the user interface, roles and permissions, and planned integrations with other systems. 
• Design and development – ​​creating the application according to the adopted guidelines. This stage involves developing individual functions, data processing mechanisms, integrations, and interface elements. 
• Testing – verifying the application's correct operation, security, integration, and compliance with the specified requirements. Depending on the project, testing may also include the solution's performance and usability. 
• Implementation and launch – preparing the production environment, configuring the application, migrating data if necessary, and making the solution available to users. Training users may also be a key element. 
• Maintenance and development – ​​monitoring application performance, troubleshooting any issues, updating, and developing functionality as the organization's needs change. 

A well-planned implementation allows not only for the application to be launched efficiently, but above all, to ensure its adaptation to the actual processes and way of working of the organization.

Data protection and web application security

Web application security should be considered from the design stage and then consistently maintained throughout its operation. Protection includes user authentication, permission management, communication and data encryption, secure information storage, vulnerability protection, and regular updates and security testing. Monitoring application performance and responding to detected threats is also crucial.

The scale of the risk demonstrates why security shouldn't be treated as an afterthought. According to the Verizon 2026 Data Breach Investigations Report, exploiting software vulnerabilities accounted for 31% of breaches, becoming the most common entry point for incidents for the first time in the report's history. The report also highlights the growing importance of stolen credentials and unpatched vulnerabilities.

For web applications, security should therefore encompass the entire solution lifecycle – from threat analysis and architecture design, through programming and testing, to updates, monitoring, and maintenance. No application is completely immune to threats, but properly designed security mechanisms can significantly reduce the risk of unauthorized access, data loss, or system disruption.

Summary

Web applications can be a key element in the digitization of processes and services within an organization. Access to system functions via a browser, centralized solution management, and the ability to integrate with other systems make them suitable for both internal processes and customer and partner communication.

Whether a web application is the right solution should primarily be determined by the organization's needs, the nature of the processes being supported, and user requirements. Properly designed, it can streamline task execution, support automation, develop self-service, and provide access to services and data from various locations.

FAQ

1. What is a web application?

A web application is software made available to users via a web browser. It allows them not only to present information but also, above all, to perform specific operations, work with data, and execute processes. It can be used for customer service, sales, internal operations, or online services, among other things.

2. Does a web application require installation?

Usually not. Users access the application via a browser, without having to install a dedicated program on their device. However, the method of access may depend on the architecture and configuration of the specific solution.

3. How long does it take to create a web application?

There is no single deadline for all projects. The implementation time depends primarily on the functional scope of the application, the complexity of the processes, the number of integrations, security requirements, and the number of users. A simple solution can be developed much faster than a complex business platform.

4. Can a web application be integrated with ERP or CRM?

Yes. A web application can be integrated with ERP, CRM systems, databases, and other solutions used within the organization. The scope and method of integration depend on the architecture of individual systems and available data exchange mechanisms.

5. Are web applications secure?

A web application can provide a high level of security, but this does not automatically result from the use of web technologies. Security depends on, among other things, the solution's architecture, authentication and access control mechanisms, data protection, communication security, updates, and infrastructure management.

6. When is it worth creating a web application?

A web application is worth considering when an organization wants to provide multiple users with a shared work environment, digitize and automate processes, integrate data from various systems, or provide customers, partners, or employees with access to online services. It is also a solution worth considering when users work from different locations and need to access the system via different devices.

Related articles

26

FEB

Enterprises ERP system WMS system

Applications of ERP systems in logistics

---

Applications of ERP systems in logistics

17

JUN

ERP system

How to create a reliable application infrastructure around your ERP system

---

How to create a reliable application infrastructure around your ERP system