Enterprise Modernization & Planning Architecture

Modernizing enterprise planning, core legacy & AI without the risk of failed rewrites.

The certainty of US strategic advisory. The speed of dedicated European engineering pods in Poland. We modernize complex financial planning, mainframe data pipelines, and enterprise AI in fixed-scope 10-day diagnostic sprints.

Book 10-Day Diagnostic Sprint Talk to a Practice Lead →

Steve Johnson

COO & Partner · Grandview Corp

"Our enterprise clients don't want a 2-year rewrite gamble. They want 100% calculation parity and visible progress in 10-day sprints."

Certified Technology Ecosystem:

The Modernization Reality

The proof isn't in the pilot. It's in what happens after.

Most enterprises attempt big-bang software rewrites or stand up isolated AI pilots, only to watch timelines slip, budgets double, and business operations stall. Legacy TM1 cubes, undocumented Cognos estates, and mission-critical mainframe transactions can't simply be turned off.

Grandview bridges the gap between legacy reliability and modern cloud agility with automated regression testing and cell-by-cell parity validation on your live corporate data.

Enterprise Benchmark

36%

Only 36% of enterprise digital modernization programs move from initial pilot to measurable business impact without budget overruns.¹

Insights & Strategic Perspectives

Current thinking on enterprise planning, legacy risk & AI governance.

Research Benchmark · Q3 2026

The Cost of Broken Cubes: 2026 Enterprise FP&A Modernization Report

Why 64% of legacy TM1 and Cognos modernization programs exceed initial budgets, and how automated regression testing achieves 100% calculation parity on live corporate data within 90 days.

Read Perspective (8 min read) →

AI Governance 5 min read

Beyond the Hype: Establishing EU AI Act & IP Guardrails for Corporate Planning

A practical framework for CFOs to prevent confidential model leakage and eliminate hallucinations in generative RAG agents.

Planning Analytics 6 min read

The TM1 2.0.9 End-of-Support Playbook: Upgrading without Re-architecting

Step-by-step strategies to modernize mission-critical financial planning cubes while preserving business continuity.

Case Study 4 min read

How a Fortune 500 Retailer Migrated 4,000 Cognos Reports to Microsoft Fabric

Eliminating $1.2M in annual software licensing with zero downtime and cell-by-cell semantic parity.

Proven Enterprise Outcomes

Quantified results delivered on live corporate data.

$1.2M+

Annual License & Infra Savings

Achieved by consolidating legacy Cognos/TM1 estates, refactoring server memory, and implementing Red Hat KubeVirt VMware exits.

90 Days

Average Time to Full Model Takeover

From undocumented orphan cubes to fully governed, optimized forecasting cycles vs. 18-24 months quoted by traditional Big 4 integrators.

100%

Cell-by-Cell Calculation Parity

Guaranteed through automated reconciliation test harnesses across all historical and current financial data before production switchover.

"Grandview supported the modernization of our enterprise financial planning environment by eliminating technical debt while ensuring 100% calculation parity. They delivered in 90 days what large integrators quoted for two years."

Doug Isbecque

Founder & Managing Partner, Grandview Corp · 25+ Years IBM Analytics Architecture

What We Do

Core capabilities engineered for enterprise scale.

FP&A & Analytics

IBM Planning Analytics (TM1)

Taking over undocumented models, resolving TM1 2.0.9 End-of-Support deadlines, and optimizing multi-cube calculation rules for enterprise finance teams.

BI & Semantic Layer

IBM Cognos & Semantic Bridges

Estate modernization, performance tuning, Motio automated testing, and parity migration to Microsoft Fabric & Power BI to eliminate license overhead.

Connected Planning

Anaplan & Multi-Platform FP&A

Recovering orphaned models, optimizing hyperblock calculation efficiency, and designing multi-platform coexistence with TM1 and Power BI.

AI & Compliance

Enterprise AI & watsonx Lakehouse

C-suite advisory for EU AI Act compliance, IP protection, watsonx.data open lakehouses (Apache Iceberg), and verifiable generative RAG agents.

Core Modernization

Mainframe & AS/400 CDC Streaming

Streaming live core transactions out of IBM Z and AS/400 into Kafka and modern cloud data platforms with zero MIPS impact and zero backend rewrites.

Hybrid Cloud & Infra

Red Hat OpenShift & VMware Exit

Migrating virtual machines away from rising VMware license fees directly onto Red Hat OpenShift Virtualization (KubeVirt) for unified container ops.

Tailored by Vertical

Deep domain expertise where calculations and compliance cannot fail.

01 / FINANCIAL SERVICES

Banking & Capital Markets

Regulatory stress testing, CCAR capital planning, risk-adjusted margin modeling, and real-time core mainframe transaction bridges.

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02 / HEALTHCARE

Healthcare & Life Sciences

Clinical trial allocation models, revenue cycle forecasting, HIPAA-compliant AI pipelines, and hospital capacity planning.

Explore Healthcare →

03 / RETAIL & CPG

Retail & Consumer Goods

Merchandise financial planning (MFP), demand forecasting, promotion ROI analytics, and multi-channel supply chain modeling.

Explore Retail & CPG →

04 / MANUFACTURING

Manufacturing & Energy

Multi-level BOM cost rollups, plant capacity optimization, commodity risk hedging, and ESG carbon accounting models.

Explore Manufacturing →

Expertise & Accountability

Led by US veterans. Delivered by Senior European Pods.

Doug Isbecque

Founder & Managing Partner

25+ years leading IBM analytics ecosystem architecture, complex TM1 financial model takeovers, and strategic client engagements for enterprise accounts.

Core Focus: Enterprise Planning & GTM Architecture

Steve Johnson

COO & Partner

Directs global delivery operations, quality assurance, and execution governance across all modernization practice areas and client pods.

Core Focus: Operations & Delivery Governance

Rusty Pennington

CFO & Partner

Specializes in commercial structuring, enterprise FP&A transformations, financial system parity, and cost-optimization modeling.

Core Focus: Commercial & Financial Systems

Daniella Santos

Sr. Client Director & Principal

Leads major client account architecture, BI estate modernization, stakeholder alignment, and reporting coexistence strategies.

Core Focus: Account Architecture & BI Strategy

Rochelyn Sy

Principal Consultant

Deep technical expert in TM1 multi-cube design, calculation engine optimization, automated testing harnesses, and rules refactoring.

Core Focus: Multi-Cube Engine Optimization

Andrzej Biesiekirski

Partner & Head of Delivery

Leads dedicated European Senior Engineering Pods in Poland. Specialist in log-based mainframe CDC, hybrid cloud streaming, and Kubernetes infrastructure.

Core Focus: Senior Pods Delivery & Core Engineering

How We Work

From diagnostic certainty to full-scale modernization.

Step 01 / Diagnostics

10-Day Fixed Sprint

Not sure of the scope or hidden risks? We conduct an in-depth audit of your legacy models or architecture, producing an exact remediation roadmap and ROI analysis before you commit.

Book Diagnostic Sprint

Step 02 / Execution

Senior Delivery Pods

Ready to build? Dedicated European engineering pods guided by a US Solution Architect execute sprints with continuous parity testing and zero disruption to daily business operations.

Learn Our Delivery Model

Step 03 / Optimization

Managed Estate Takeover

Want experts maintaining and evolving your models? We provide ongoing SLA-backed support, capacity governance, and performance tuning so your internal teams can focus on growth.

Discuss Managed Takeover