Simplicity IT Professional Service | Six-week implementation

Microsoft Sentinel SIEM Modernization: 6-Week Implementation

Security operations modernization needs controlled connector, detection, automation, cost, portal, and acceptance work packages instead of an unbounded production rewrite.

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What this implementation gives you

  • A governed modernization foundation for one primary Microsoft Sentinel workspace.
  • Up to eight prioritized data connectors, 25 tested analytics rules, and five governed automation rules or playbooks.
  • Microsoft Defender portal readiness, one controlled pilot, and one customer-approved production release.
  • Acceptance evidence, as-built configuration, operating runbooks, and a prioritized 90-day backlog.

How the engagement runs

  1. Weeks 1 and 2: Baseline and connect

    Confirm architecture, access, data economics, acceptance criteria, then onboard and validate the prioritized connectors.

  2. Weeks 3 and 4: Build detections and automation

    Implement and test the approved detection wave, then develop the automation package with notify-only controls and rollback evidence.

  3. Week 5: Validate the pilot

    Validate Microsoft Defender portal operations, run the approved pilot, and resolve in-scope release blockers.

  4. Week 6: Release and hand off

    Complete the approved production release, user acceptance testing, as-built evidence, operating runbooks, and the 90-day backlog.

Sample implementation artifacts

These illustrative examples show the deliverables you can expect. They use synthetic data and do not depict customer environments.

Synthetic Microsoft Sentinel modernization control board.
Modernization control board
Synthetic Microsoft Sentinel data connector deployment record.
Data connector deployment record
Synthetic analytics rule release matrix.
Analytics rule release matrix
Synthetic automation playbook approval runbook.
Automation approval runbook
Synthetic production acceptance evidence register.
Production acceptance evidence

Evidence to decision flow

Context approved

The customer confirms scope, access, acceptance criteria, change windows, and named approvers before build activity begins.

Controlled delivery

Simplicity IT builds and tests only the accepted work packages in the customer-owned environment, with evidence recorded at each checkpoint.

Your decision

A named customer owner reviews the exact change, test result, rollback path, operating owner, and cost impact before any production effect or cutover.

Evidence retained

The as-built record, acceptance evidence, rollback status, decision log, and operational handoff are retained according to the customer agreement.

Your approval before production changes

A named customer owner approves each production change or cutover against the agreed scope, test evidence, rollback path, operating owner, and expected cost before it proceeds.

Scope and boundaries

  • The public scope covers one primary workspace, up to eight connectors, 25 analytics rules, five automation rules or playbooks, one pilot, and one production release.
  • Additional workspaces, custom connectors, large-scale historical data migration, and third-party SIEM contract termination are excluded.
  • 24x7 managed detection and response, live incident response, licenses, Azure consumption, and custom software development require separate scope.
  • Failed or unresolved work packages remain outside the production release and enter the backlog.

Microsoft technologies in scope

  • Microsoft Sentinel
  • Microsoft Defender XDR
  • Azure Lighthouse
  • Azure Monitor

Request a scoping call

Tell us about your environment and priorities. We will confirm the scope, schedule, and purchasing options with you before work begins.

Discuss this engagement