Clean Core Strategy for SAP Landscapes

Clean Core Strategy for SAP Landscapes explains how leaders can turn a broad technology ambition into governed decisions, measurable delivery evidence and a supportable operating capability.

This topic is best understood as an architecture and governance discipline that protects upgradeability while preserving justified differentiation through supported extension patterns. The executive task is to connect business outcomes, architecture, commercial choices, delivery controls and service ownership without allowing any one workstream to move in isolation.

Executive context

SAP supports processes that directly affect revenue, cash, supply, manufacturing, compliance and customer commitments. Decisions about the SAP foundation therefore influence far more than technology cost. They shape process consistency, data trust, control evidence, organizational speed and the ability to adopt future capabilities.

Clean core is a continuing management practice with owners, evidence and expiry dates. A useful executive plan makes this principle actionable through decision rights, transparent assumptions and measurable acceptance criteria.

Decisions to make before detailed design

Create a decision register that can be reviewed by business, technology, security, finance and operations leaders. The register should show the decision, owner, evidence, dependency, status and next review date. The following areas deserve explicit treatment.

Core Modification Policy

Set an explicit position on core modification policy before detailed design advances. Name the accountable executive, the evidence required, the dependencies and the date when the decision must be reviewed. For Clean Core Strategy for SAP Landscapes, this prevents an assumption from becoming an expensive architectural constraint.

Released Interface Use

Set an explicit position on released interface use before detailed design advances. Name the accountable executive, the evidence required, the dependencies and the date when the decision must be reviewed. For Clean Core Strategy for SAP Landscapes, this prevents an assumption from becoming an expensive architectural constraint.

Extension Placement

Set an explicit position on extension placement before detailed design advances. Name the accountable executive, the evidence required, the dependencies and the date when the decision must be reviewed. For Clean Core Strategy for SAP Landscapes, this prevents an assumption from becoming an expensive architectural constraint.

Exception Approval

Set an explicit position on exception approval before detailed design advances. Name the accountable executive, the evidence required, the dependencies and the date when the decision must be reviewed. For Clean Core Strategy for SAP Landscapes, this prevents an assumption from becoming an expensive architectural constraint.

Technical Debt Retirement

Set an explicit position on technical debt retirement before detailed design advances. Name the accountable executive, the evidence required, the dependencies and the date when the decision must be reviewed. For Clean Core Strategy for SAP Landscapes, this prevents an assumption from becoming an expensive architectural constraint.

Operating model and architecture principles

Start with business capabilities and process outcomes. Use standard SAP capabilities where they meet the need, keep the ERP core focused and place justified differentiation in governed extensions that use supported interfaces. Document every exception with an owner, business reason, lifecycle plan and expiry date.

Design service ownership at the same time as the target architecture. Platform services, business processes, data domains, integrations, identities, controls and releases each need an accountable owner. A technically sound design will degrade when ownership is unclear or when operational teams receive it too late.

Security, data and resilience are architectural qualities rather than final review activities. Include authorization, segregation of duties, data retention, recovery, monitoring and evidence requirements in each design decision. This creates a target state that can be operated and audited after the program team moves on.

A focused first ninety days

The first ninety days should reduce uncertainty and create reusable delivery foundations. It should not attempt to finalize every implementation detail. A practical sequence follows.

1. Custom Code Inventory

During this stage, establish a verified baseline for custom code inventory, resolve the highest impact assumptions and create an evidence based backlog. Include business, architecture, data, security, testing and operations representatives from the beginning. The output should be usable by delivery teams and understandable to executive sponsors.

2. Usage Analysis

During this stage, establish a verified baseline for usage analysis, resolve the highest impact assumptions and create an evidence based backlog. Include business, architecture, data, security, testing and operations representatives from the beginning. The output should be usable by delivery teams and understandable to executive sponsors.

3. Extension Classification

During this stage, establish a verified baseline for extension classification, resolve the highest impact assumptions and create an evidence based backlog. Include business, architecture, data, security, testing and operations representatives from the beginning. The output should be usable by delivery teams and understandable to executive sponsors.

4. Governance Design

During this stage, establish a verified baseline for governance design, resolve the highest impact assumptions and create an evidence based backlog. Include business, architecture, data, security, testing and operations representatives from the beginning. The output should be usable by delivery teams and understandable to executive sponsors.

5. Retirement Roadmap

During this stage, establish a verified baseline for retirement roadmap, resolve the highest impact assumptions and create an evidence based backlog. Include business, architecture, data, security, testing and operations representatives from the beginning. The output should be usable by delivery teams and understandable to executive sponsors.

Delivery workstreams

• Custom Code Inventory: Define the outcome, owner, entry criteria and completion evidence for custom code inventory. Connect the work to business acceptance, architecture review and operational ownership so that progress can be demonstrated rather than inferred.
• Usage Analysis: Define the outcome, owner, entry criteria and completion evidence for usage analysis. Connect the work to business acceptance, architecture review and operational ownership so that progress can be demonstrated rather than inferred.
• Extension Classification: Define the outcome, owner, entry criteria and completion evidence for extension classification. Connect the work to business acceptance, architecture review and operational ownership so that progress can be demonstrated rather than inferred.
• Governance Design: Define the outcome, owner, entry criteria and completion evidence for governance design. Connect the work to business acceptance, architecture review and operational ownership so that progress can be demonstrated rather than inferred.
• Retirement Roadmap: Define the outcome, owner, entry criteria and completion evidence for retirement roadmap. Connect the work to business acceptance, architecture review and operational ownership so that progress can be demonstrated rather than inferred.

Risks and corresponding controls

Programs also need an active dependency map. Data, integrations, roles, custom developments, infrastructure, testing, change readiness and service transition often depend on the same scarce decisions. Review these dependencies at a leadership forum that can resolve them rather than merely record them.

Measures that show progress

Use a small scorecard that combines business value, technical quality, delivery confidence, adoption and service performance. Measures should lead to decisions and should not exist only for status reporting.

• Core Modifications: Agree the baseline, target, data source, accountable owner and review frequency. Use the trend to trigger a decision or corrective action.
• Released Interface Adoption: Agree the baseline, target, data source, accountable owner and review frequency. Use the trend to trigger a decision or corrective action.
• Exception Age: Agree the baseline, target, data source, accountable owner and review frequency. Use the trend to trigger a decision or corrective action.
• Retired Code: Agree the baseline, target, data source, accountable owner and review frequency. Use the trend to trigger a decision or corrective action.
• Upgrade Effort: Agree the baseline, target, data source, accountable owner and review frequency. Use the trend to trigger a decision or corrective action.

Questions for the executive team

• Who owns core modification policy, what evidence supports the current position and what event would require the decision to be revisited?
• Who owns released interface use, what evidence supports the current position and what event would require the decision to be revisited?
• Who owns extension placement, what evidence supports the current position and what event would require the decision to be revisited?
• Who owns exception approval, what evidence supports the current position and what event would require the decision to be revisited?
• Who owns technical debt retirement, what evidence supports the current position and what event would require the decision to be revisited?

Leaders should also ask what must remain distinctive, what can be standardized, which assumptions remain untested and what evidence is required before the next investment or go live decision. These questions keep the program connected to value and operational reality.

Cygnivo perspective

Clean core is a continuing management practice with owners, evidence and expiry dates. The objective is not a technical completion event. It is a dependable enterprise capability that protects business continuity, keeps architecture supportable and continues to produce measurable outcomes.

Cygnivo helps organizations connect strategy, migration, architecture, data, security and operations into one governed transformation path. Explore the relevant Cygnivo capability, review Cygnivo insights or start a conversation with Cygnivo.

Topics: #SAP #Clean #Core #Strategy #Landscapes