Explanation:
Log Analytics workspace to use: LA1
Windo ws security events to collect: All Events
To meet the Azure Defender (Microsoft Defender for Cloud) requirement that all servers send logs to the same Log Analytics workspace , you should select the existing workspace LA1 . Defender for Cloud best practic es recommend centralizing data in a single workspace for unified analytics, incident correlation, and cost control. Using the "Default workspace created by Azure Security Center" or creating a new workspace would fragment telemetry, complicate management, and contradict the stated requirement and the business goal to minimize costs (multiple workspaces can increase ingestion/retention overhead and complicate RBAC and automation).
For Windows hosts, Defender for Cloud's Data collection setting controls the l evel of Windows Security Events collected: Minimal , Common , or All Events . The business requirement calls for logs that provide a full audit trail of user activities . In Microsoft guidance, All Events is the level intended for comprehensive auditing (inclu ding logon/logoff, account changes, privilege use, process creation, object access, and other advanced categories). Therefore, to satisfy the "full audit trail" requirement and ensure complete visibility for investigations and Sentinel analytics, choose Al l Events .
In summary: centralize on LA1 (single workspace) and collect All Events to achieve both operational and compliance objectives with Defender for Cloud and Sentinel.