.NET Core and .NET Framework are both ecosystem variations developed by Microsoft. They share similar libraries, syntax and core components, yet have distinctive characteristics and purposes.

Key Distinctions

Dependency on Operating System

.NET Core is built to fluctuate across operating systems, providing reliability from Windows, macOS, and Linux.

.NET Framework’s exclusive residence is on Windows.

Deployment Mechanisms

For .NET Framework, components are distributed through a Global Assembly Cache (GAC).

In contrast, .NET Core utilizes its open-source library format. All essential dependencies are gathered during the runtime of the hosting system.

Stack Structures

.NET Core is modular in design, permitting you to streamline the allocation of resources. This means that resources from .NET Core can be combined with resources from other packages or your code, and any unused resources will be left out of the final deployment.

.NET Framework resources are all-inclusive. Every application constructed within the .NET Framework will use the complete stack of associated resources.

API Accessibility

.NET Core highlights a subset of libraries accessible across all operating systems. This ensures consistent performance among various platforms.

On the contrary, .NET Framework provides in-depth access to exclusive Windows APIs, which might not resonate well with non-Windows platforms.

Targets and Use-Case Scenarios

.NET Core-Based Projects

• Cloud-First Deployments: Given its lightweight factor, numerous platforms host applications from .NET Core.
• Applications involving containers: .NET Core is particularly suitable, bearing its minimalistic resource usage.
• Web-based applications: .NET Core is a strong contender due to its inbuilt support for client-server architectures and cloud-based applications.

.NET Framework-Based Projects

• Long-Running Applications: Applications with consistent and prolonged operational times will significantly benefit from using .NET Framework.
• Established Windows-centric applications: .NET Framework still reigns as the preferred choice, especially for applications deeply embedded within Windows ecosystems or those leveraging platforms such as Silverlight or WPF.
• Specific APIs: If your application necessitates specialized Windows APIs that aren’t accommodated by .NET Core, .NET Framework remains the ultimate choice.