There is nothing special. This is exactly how it sounds.

We can speak about:

• SoC for programming functions
• SoC for modules
• SoC for the system’s design
• Soc for a website:
  • Style and presentation
  • Business Logic
  • Content
• Soc for a web server:
  • Input layer
  • Logic layer
  • Data access layer
• And more

• Separation of Concerns in Software Design
• Separation of Concerns