Choosing the Right Migration Path
Between Greenfield and Brownfield
S/4HANA Implementation

SAP ECC, or SAP ERP Central Component, is a module set that provides an integrated overview of a company's key business processes. According to findings from 6sense, over 7,300 companies leverage SAP ECC, representing a little over 5% of the market share. It should come as no surprise that SAP is cutting off support soon, more specifically, by 2027. So, what is the best decision for these companies to avoid costly disruptions and missed opportunities to grow?

For decision-makers, SAP architects, and IT leaders, we're presenting a guide that briefly explores the Greenfield, Brownfield, and Hybrid approaches to migrating into SAP's latest offering, S/4HANA – helping you determine the best fit for your business.

Understanding the Approaches to SAP S/4HANA Migration

As mentioned previously, there are three ways to migrate into SAP S/4HANA. “Greenfield” refers to new implementation, resulting in a complete redesign of SAP processes in a new system. “Brownfield” aims to upgrade the existing system while also ensuring that existing workflows and historical data are maintained. “Hybrid” is, as the name suggests, a combination of the two.

Starting off with Greenfield, companies can expect their IT partners to reengineer their SAP processes from the ground up. Ideally, companies with severely outdated systems aiming to evolve into cloud processes and new functionalities would benefit most from this. Consequently, these organizations would reap the benefits of improved operational health, achieve long-term cost savings, and future-proof their operations with cutting-edge tools like Artificial Intelligence (AI). However, there are hurdles to this approach. Namely, it takes more time and money to perform this kind of migration.

As for the Brownfield method, this is primarily beneficial for enterprises that are looking for a quick, low-risk migration process and don't need robust changes to their existing SAP systems. The results of this migration technique are quicker deployment times and lesser risks of losing historical data and workflows. Conversely, the challenges associated with this approach include limited innovation and potential inefficiencies resulting from remaining on a legacy system.

Finally, the option that best fits large enterprises with enterprises with multiple SAP instances and requires a more intricate touch to digitally transform their systems. Therefore, companies leveraging this migration method have a more flexible, scalable, step-by-step modernization of their tools and workflows – all while maintaining essential data and processes. In terms of execution, this is more complex to achieve and may require middleware. Below is a table that compares all three options.

The Challenges with Implementation

While the hurdles of each implementation were previously stated, the overarching barriers for companies who are looking to migrate to SAP S/4HANA cannot be overstated. In a broad sense, the big three difficulties associated with these migration approaches are cost, the complexities of maintaining data integrity, and possible adoption resistance from users.

The solutions to ensure a clean transition involve a communicative developer who's able to provide "phased implementation." In other words, the new system would be rolled out in stages, allowing technical issues to be addressed promptly. Furthermore, taking advantage of cutting-edge tools such as AI can optimize the migration process and even be used to create a comprehensive user training experience.

Transforming a Business and Future-Proofing

Staying ahead of the curve has become necessary for various businesses across many industries. Sectors such as manufacturing and healthcare are not strangers to this. However, for these companies, migrating to SAP S/4HANA represents a transformative undertaking that, with the help of an accomplished developer, can lead to optimized processes and costs, greater innovation, and reductions in risks associated with using outdated tools.

Produced & Edited by: Juan Requena