| Browser | Database | FS Application | FS media | Application Server | CLI | |
| Browser | N/A | N/A | N/A | HTTP/HTTPS Requests | N/A | |
| Database | N/A | N/A | N/A | Responses to SQL queries | Responses to SQL queries | |
| FS Application | N/A | N/A | N/A | N/A | N/A | |
| FS media | N/A | N/A | N/A | N/A | N/A | |
| Application Server | HTTP Responses | Run SQL queries | Read PHP files, Write cache, Write log files | Read and write media attached to products | ||
| CLI | N/A | Run SQL queries | Read PHP files, Write cache, Write log files | Read and write media attached to products | N/A |