Integrations - best practices or approach

Requirement: develop and expose services using ESB (Enterprise Sevice Bus) that push data into CRM

This service will internally call the CRM services.

I am looking for best practices. Have the below 2 options:

1. Create a landing custom entity for each record type. The external service will create records on the landing entity.

CRM will handle the logic of creating the actual entity type records reading the landing entity records

2. Have the external service to create the required record directly in CRM

Please suggest which one of the above is the best practice

Thanks