Explain two types of deployment for .NET Core applications

In .NET Core, there are two primary types of deployment: Framework-Dependent Deployment (FDD) and Self-Contained Deployment (SCD). Each has its own characteristics, advantages, and disadvantages.

Framework-Dependent Deployment (FDD)

Characteristics:

• Dependency on Installed Runtime: The application relies on the presence of a shared .NET runtime on the target machine. Only the application binaries and third-party dependencies are included in the deployment package.
• Smaller Package Size: Since the .NET runtime is not included, the deployment package is significantly smaller. For example, a simple ASP.NET Core application might be around 2.66 MB[1].
• Cross-Platform: The application can be run on any platform that has the appropriate .NET runtime installed. The same binary can be executed on different operating systems using the dotnet command.

Advantages:

• Reduced Disk and Memory Usage: Multiple applications can share the same .NET runtime, reducing overall disk and memory usage.
• Automatic Updates: Applications can benefit from updates to the .NET runtime without needing to be recompiled or redeployed. This includes security patches and performance improvements[1][2].

Disadvantages:

• Runtime Version Dependency: The application depends on the version of the .NET runtime installed on the target machine, which can lead to compatibility issues if the runtime is not the expected version[1][10].

Self-Contained Deployment (SCD)

Characteristics:

• Includes .NET Runtime: The deployment package includes the .NET runtime and all necessary libraries, making the application independent of the installed runtime on the target machine.
• Larger Package Size: Because the runtime is included, the deployment package is much larger. For instance, a self-contained deployment for a simple ASP.NET Core application can be around 93.1 MB for Windows and 96.3 MB for Linux[1].
• Platform-Specific: The application is compiled for a specific platform and cannot be run on other platforms without recompilation. Different packages need to be created for different target environments (e.g., win-x64, linux-x64)[1][5].

Advantages:

• Version Control: Developers have complete control over the .NET runtime version used by the application, ensuring consistency across different environments[1][5].
• No Runtime Installation Required: The application can run on machines without any .NET runtime installed, simplifying deployment in environments where inst...