Seamless User Experience

In a unified model, users interact with a single application, leading to a more consistent and intuitive user experience. They don't need to switch between different applications with varying interfaces. 

Training and onboarding processes are also streamlined because users only need to learn one application, making it easier for them to become proficient.

Efficient Data Flow

Data flows more efficiently within a unified application because there's less need for complex data synchronization between disparate systems. This can reduce data errors and inconsistencies.

Improved Analytics and Reporting

Unified systems often provide better data analytics and reporting capabilities because they have access to all relevant data in one place. This can lead to more insightful business intelligence.

Enhanced Collaboration

Collaboration is typically more efficient because users share a common workspace. They can easily access and collaborate on shared data without needing to export or import it into different systems.

Cost Savings

Over the long term, a unified software application can result in cost savings. There are fewer licensing fees, integration costs, and support expenses associated with maintaining multiple separate applications.

Faster Development and Deployment

Developing and deploying updates or new features is often quicker in a unified model. Changes can be rolled out more easily without disrupting interconnected systems.

Scalability

Scaling a unified application is often simpler because you're dealing with a single system. Adding new features or accommodating more users can be done more seamlessly.

Enhanced Security

Unified applications typically boast enhanced security due to a reduced number of integration points, consequently minimizing potential vulnerabilities and security breaches. This is in stark contrast to systems like WordPress, which, owing to their extensive community-contributed modules, often contend with a multitude of security vulnerabilities.

Vendor Consolidation

Opting for a single vendor to provide a unified application streamlines vendor management, contract negotiations, and support interactions. Additionally, IT overheads are reduced as maintenance and support is more straightforward in a unified model due to there being fewer systems to manage.

While unified systems offer numerous advantages, it's crucial to acknowledge that there are situations where a hub-and-spoke model might be more fitting. This is particularly applicable when the core business systems necessary for specialized tasks lack integration options.

Customization

Customizing and tailoring the application to specific business needs is more straightforward when it's unified as you are not coordinating multiple software vendors with differing goals and priorities. Thus a unified application can more easily create a cohesive solution that aligns perfectly with your requirements.

Ultimately, the choice should harmonize with your specific business objectives and demands.