Onboard Microsoft Security Across Customer Tenants at Scale

Reviewed by ContraForce Security Operations Team · Updated 2026-08-12

ContraForce enables MSSPs to onboard 50+ Microsoft Sentinel and Defender XDR customer tenants in a single day -- a process that traditionally takes 2-5 days per tenant. The platform's guided deployment configures Sentinel workspaces, activates data connectors, deploys analytics rules, maps Gamebooks, and validates security coverage in about 10 minutes per tenant, with no agents to install and no infrastructure to provision.

The Traditional Onboarding Problem

MSSP tenant onboarding for Microsoft Security is notoriously time-consuming. A typical manual deployment involves:

• Configuring the Sentinel workspace and retention policies (1-2 hours)
• Activating and validating data connectors (2-4 hours)
• Deploying analytics rules and tuning thresholds (4-8 hours)
• Setting up automation rules or workflows (2-4 hours)
• Configuring Defender XDR integration and policies (2-4 hours)
• Testing alert flow and response actions (2-4 hours)
• Documenting the deployment and creating runbooks (2-4 hours)

Time Comparison: Traditional vs. ContraForce

Prerequisites Checklist

Before starting tenant onboarding, ensure the following are in place:

• [ ] Microsoft 365 tenant access -- Global Admin or Security Admin consent for app registration
• [ ] Microsoft Sentinel workspace -- Active Log Analytics workspace (ContraForce can guide creation if needed)
• [ ] Defender XDR licensing -- Appropriate Microsoft 365 / Defender licenses activated for the customer
• [ ] Data connector credentials -- Service accounts or API keys for third-party connectors (if applicable)
• [ ] ContraForce platform access -- Active ContraForce subscription with MSSP admin role
• [ ] Customer scope document -- Agreed-upon security monitoring scope (which assets, which log sources)
• [ ] Network access -- No firewall rules blocking Microsoft Graph API and Sentinel REST API access

Step-by-Step Deployment Guide

Step 1: Register the ContraForce App in the Customer Tenant (5 minutes)

ContraForce provides a one-click app registration flow. The customer's Global Admin grants consent for the required Microsoft Graph and Sentinel API permissions. No manual app registration, certificate management, or secret rotation is needed.

Step 2: Connect Microsoft Sentinel (5 minutes)

ContraForce auto-discovers the customer's Sentinel workspace and validates connectivity. The platform confirms log ingestion status, workspace retention settings, and available data connectors. If Sentinel is not yet deployed, ContraForce provides a guided setup wizard.

Step 3: Activate Data Connectors (5 minutes)

Select from pre-configured connector templates for common data sources: Azure Active Directory (Entra ID), Microsoft 365 audit logs, Defender for Endpoint, Defender for Identity, Defender for Office 365, Defender for Cloud Apps, and Azure Activity. ContraForce validates each connector's data flow in real time.

Step 4: Deploy Analytics Rules (3 minutes)

ContraForce deploys curated analytics rule sets tailored to the customer's active data connectors. Rules are pre-tuned for MSSP operations -- optimized to minimize false positives while maintaining detection coverage. Custom rules can be layered on top for customer-specific requirements.

Step 5: Map Gamebooks (5 minutes)

Assign Gamebooks to the tenant based on your MSSP's standard SOP set. Gamebooks define how Security Delivery Agents will handle incidents for this customer -- automated actions, approval gates, escalation criteria, and reporting format. Tenant-specific overrides (protected assets, notification preferences) are configured here.

Step 6: Validate and Activate (2 minutes)

ContraForce runs an automated health check: confirming data ingestion, analytics rule firing, Gamebook mapping, and Defender XDR connectivity. A deployment summary is auto-generated documenting the configuration for your records and the customer.

Scaling Beyond customer tenants at scale

The 10-minute-per-tenant deployment time remains consistent whether you are onboarding tenant number 5 or tenant number 500. ContraForce's architecture does not degrade with tenant count because:

• No per-tenant infrastructure: All tenants share the ContraForce platform -- no SIEM instances, SOAR servers, or jump boxes per customer
• Gamebook inheritance: New tenants inherit your established Gamebook library automatically
• Cross-tenant intelligence: Detection and response improvements from any tenant benefit all tenants
• Pay-as-you-go pricing: investigation costs scale with the work agents actually perform, and volume discounts apply automatically as your practice grows

Post-Onboarding: First 30 Days

After deployment, ContraForce recommends the following 30-day validation period:

Frequently Asked Questions

What Microsoft licenses does the customer need?

Minimum requirements: Microsoft Sentinel (Pay-As-You-Go or commitment tier) and at least one Defender XDR component (Defender for Endpoint Plan 2, Defender for Identity, Defender for Office 365, or Defender for Cloud Apps). Microsoft 365 E5 or E5 Security add-on provides the broadest coverage.

Can I onboard tenants that already have Sentinel configured?

Yes. ContraForce connects to existing Sentinel workspaces without modifying their configuration. Existing analytics rules, automation rules, and data connectors remain intact. ContraForce layers its capabilities on top of the existing deployment.

What if a customer does not have Sentinel yet?

ContraForce provides a guided Sentinel deployment wizard that provisions the Log Analytics workspace, configures retention policies, and activates standard data connectors. This adds approximately 15-20 minutes to the onboarding process.

How does ContraForce handle tenants in different Azure regions?

ContraForce supports Sentinel workspaces in any Azure region. The platform connects via Microsoft APIs, which are region-agnostic. There are no data residency constraints imposed by ContraForce beyond what Microsoft's own regional infrastructure requires.

Can I automate onboarding for large batches of tenants?

Yes. ContraForce supports batch onboarding via CSV import for tenant details and bulk app registration flows. MSSPs with 100+ tenants to onboard can streamline the process further by pre-staging app registrations and using template-based Gamebook assignments.

What happens if onboarding fails for a specific tenant?

ContraForce's health check identifies the specific failure point -- permission issues, missing data connectors, or workspace configuration problems. The platform provides actionable remediation steps for each issue. Most onboarding failures are resolved in under 10 minutes.