Please anyone who has experience with enterprise architecture or archi I need so

Please anyone who has experience with enterprise architecture or archi I need someone to help me with this diagram please I am at a lost
Important Info

The order was placed through a short procedure (customer skipped some order details).
Please clarify some paper details before starting to work on the order.

Type of paper and subject
Number of sources and formatting style
Type of service (writing, rewriting, etc)