Microsoft Security Stack — the 30/60/90 day rollout plan
Published 12 Jun 2026
· By
Pawan Sharma
· Microsoft Security
· 13 min read
"We have E5 — now what?" — the most common opening question we hear from CISO + CIO pairs starting their Microsoft security-stack rollout. This post is the 30/60/90 plan we run end-to-end with Indian mid-market and enterprise teams. What ships in the first 30 days, what's stable by 60, what's at GA by 90, and what the operating KPIs look like at each milestone. Plus what NOT to try in the first 90 days.
Day 30
Foundation live
Entra CA library + Defender XDR baseline + Sentinel ingest.
Day 60
Operational
Purview labels + DLP enforcing; analyst KQL training done.
Day 90
Production-stable
Defender for Cloud + Insider Risk baseline; ROI report.
~₹60-90 L
Services budget
Mid-market 90-day rollout. Enterprise 1.2-2.5 cr.
Days 0-30 — Foundation
The "must ship" list
Identity + Endpoint baseline; without these, the rest doesn't matter
- Entra Conditional Access library (Week 1-2) — 8 baseline policies + break-glass + phishing-resistant MFA for admins
- Defender for Endpoint P2 + Defender for O365 P2 (Week 1-3) — covered devices + mailboxes + AIR enabled
- Defender for Identity (Week 3-4) — on-prem AD signal ingestion + lateral-movement detection
- Sentinel workspace + Microsoft 365 data connector (Week 2-4) — free ingest of M365 + Defender + Entra sign-ins; commit-tier sizing baseline
- Defender XDR portal as the analyst landing surface — unified incidents across endpoint + email + identity + cloud apps
Days 31-60 — Operationalisation
From foundation to operating posture
Purview + Intune + Sentinel maturation
- Purview sensitivity label taxonomy (Week 5-6) — 5-label model + auto-labelling rules for PII + financial
- Purview DLP for high-risk PII (Week 6-7) — endpoint + email + cloud apps; monitor-mode for 7 days then enforce
- Intune device compliance + app protection (Week 5-8) — managed-device policy enforcement through CA
- Sentinel detection-rule baseline (Week 6-8) — Microsoft-pre-built analytics rules + first custom rules + Logic Apps playbooks for top-3 incident types
- Tier-1 + Tier-2 analyst KQL training (Week 7-8) — Microsoft Learn KQL paths + hands-on lab
Days 61-90 — Production stability + reporting
The maturity layer
Defender for Cloud + Insider Risk + ROI baseline
- Defender for Cloud Foundational CSPM + Defender for Servers (Week 9-10) — Azure + multi-cloud connector live; secure-score baseline
- Purview Insider Risk Management (Week 10-11) — anonymised-investigation-mode baseline + Communication Compliance
- Sentinel commit-tier rightsizing (Week 11) — actual ingest vs estimated; flip to commit-tier pricing
- Compliance Manager + Secure Score reporting (Week 12) — DPDP + ISO 27001 + CIS baseline dashboards
- Day-90 ROI report + handover — MTTR delta, blocked DLP events, secure-score lift, retired third-party SKUs (where applicable)
The KPI dashboard at each milestone
| KPI | Day 30 target | Day 60 target | Day 90 target |
|---|---|---|---|
| Secure Score (platform metric) | baseline + 15% | baseline + 30% | baseline + 50% |
| % users on Conditional Access | 100% | 100% | 100% |
| % admins on phishing-resistant MFA | 80% | 100% | 100% |
| Tier-1 incident MTTR | baseline | -20% | -35% |
| % endpoints covered by Defender XDR | 95% | 100% | 100% |
| Sentinel ingestion sources connected | M365 + Defender + Entra | + firewall + cloud | + all production sources |
| Sensitivity labels deployed to documents | — | 30-50% | 70-85% |
| DLP policy enforcement | — | monitor mode | enforce mode |
| Defender for Cloud Foundational CSPM | — | — | all subs connected |
What NOT to attempt in the first 90 days
▸ Copilot for Security pilot
Wait until Sentinel + Defender XDR are stable. Day 90+ — Copilot accelerates a working SOC; it can't fix a broken one.
▸ Defender CSPM premium
Foundational CSPM first; attack-path analysis premium tier is month-4 work after CSPM remediation cycle starts.
▸ CrowdStrike / Splunk decommission
Parallel-run minimum 30 days each before retirement. Day-90 plan is "Microsoft stack live"; decommission is the 12-18 month consolidation cycle.
▸ Defender for IoT (OT estates)
If you have an OT footprint requiring Defender for IoT, plan as a separate workstream; the IT-side rollout takes priority.
FAQ
Is 90 days realistic for the full Microsoft security stack?
What's the prerequisite licence position?
What if we have CrowdStrike / Splunk / Mimecast still in flight?
Who owns this rollout — IT or Security?
What's the right pilot scope?
How much does the 90-day engagement cost?
What's the single highest-impact 30-day investment?
How do we measure progress?
90-day Microsoft Security Stack rollout — fully managed
Defender XDR + Entra CA + Sentinel + Purview foundation, with KPI baseline + Sec ops hand-off
Ogma runs the 30/60/90 plan end-to-end — CSP partner so licence + services on a single INR contract, named delivery lead + dedicated technical architect. Fixed-scope quote tied to seat count + estate size.
Request the 90-day plan or explore the Microsoft Security Stack landingSources
Related: E5 Security bundle math · Entra CA rollout · 5 mistakes Indian buyers make
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