Garbage Collector

• automatic memory management
• allocates and releases memory
• prevents memory leaks and accessing dead objects
• provides memory safety
• virtual memory space
• defragments/compacts memory
• heap have 3 generations
  • 0 – for new objects;
  • 1 – for objects that lives through GC from 0
  • 2 – for long living objects from 1 and 0
• also Large Objects Heap (LOH) for big objects like arrays over 85,000 bytes

Further read:

https://learn.microsoft.com/en-us/dotnet/standard/garbage-collection/fundamentals?source=recommendations