Core System Modernization

Core system modernization is the replacement or re-architecture of the systems of record a business cannot operate without: the policy and billing platform at an insurer, the core ledger at a bank, the ERP and order systems at a manufacturer or distributor, and the mainframe applications that still run many of them. BD Emerson decides with you which systems to replace, which to wrap behind APIs, and which to retire, then builds and converts one domain at a time. We deliver larger programs alongside our Andersen Consulting colleagues, including SPR's custom software and cloud modernization teams.
Most programs combine three moves. Wrapping puts a documented API layer and an event stream in front of a stable core, so new products and channels can change without touching it. Replacing builds or buys a new system and moves the business onto it in reconciled waves. Retiring shuts down what no longer earns its keep. The right mix depends on which constraint binds first: the vendor contract, the people who can still maintain the system, or the products the business cannot launch on it.
Clients usually arrive at a decision point: a license renewal inside three years, a mainframe contract that sets the exit date, a product launch the current system cannot support, or an acquisition that left two cores running the same business. The method is the same in insurance, banking, and enterprise systems, and it starts with a five-year cost model of every path, including staying where you are.
We map the systems of record, the integrations, and the contract dates, then model the cost of each path over five years using your volumes and staffing. The recommendation names the decision date and what drives it.
We build or wrap one bounded piece first, such as a product, a region, or a single integration, and run it on production data. Your team uses it before the full program is approved.
Each wave moves a domain with its converted data, runs in parallel until the numbers match, and cuts over on a planned date. Waves are sized so that any one of them can be reversed.
We decommission each old system after its last wave closes, archive the records you must keep, and hand your team the code, infrastructure, and runbooks.

Bring your system inventory and your contract dates. In one working session we will map what to replace, what to wrap, and what a first increment would prove.

We resell no core software and take no vendor margin, so the replace, wrap, or stay recommendation rests on your numbers. When a suite or your current core is the better answer, we say so.

The firm that builds your core also runs penetration testing, incident response, and compliance programs, so access controls, audit trails, and the evidence examiners ask for are designed in from the first sprint.

BD Emerson is part of Andersen Consulting. Large programs draw on Andersen Consulting colleagues, including SPR's custom software and cloud modernization teams, under one plan and one accountable lead.
Great consulting firms for scaling security, compliance, and appsec.
Outstanding partner in Technical and Cyber Due Diligence
Appsec maturity and application hardening.
BD Emerson helped us simplfiy our compliance management.
BD Emerson did such a phenomenal job. What started as privacy support quickly became a full partnership across compliance, engineering, and even business operations. They’re embedded with our team. They understand our product. They move fast. They’re simply invaluable.
Great consulting firms for scaling security, compliance, and appsec.
Outstanding partner in Technical and Cyber Due Diligence
Appsec maturity and application hardening.
BD Emerson helped us simplfiy our compliance management.
BD Emerson did such a phenomenal job. What started as privacy support quickly became a full partnership across compliance, engineering, and even business operations. They’re embedded with our team. They understand our product. They move fast. They’re simply invaluable.
We had a hard time finding the right company to partner with in support of our compliance journey. Some vendors sell the idea that they do the work, but then you end up doing everything. The ambiguity is what killed our last project. BD Emerson’s team has such great technical knowledge and understands the standard so well that they made us comfortable with moving fast. This has led to us closing major enterprise customers that were previously out of reach because of security and compliance.
Lead an enterprise initiative to overhaul the organization's technology stack from ecommerce, corporate tech, and corporate security.
Supported ISO 42001 exercise and served as internal auditor.
Rubrik's privacy and compliance team began with the backbone of BD Emerson. BD Emerson supported building out the privacy program, GRC (ISO 27001, SOC 2, CMMC, FedRAMP), and the appsec function.
We needed a partner who could move quickly, without sacrificing precision. BD Emerson brought the expertise, structure, and speed we were looking for. Their team became an extension of ours, embedding themselves across the organization, guiding us step by step, and giving us confidence in areas we hadn’t tackled before. The internal audit they conducted was so detailed that even the external auditors called it out. Achieving ISO 27001 with zero nonconformities says everything you need to know about the quality of the partnership.
We had a hard time finding the right company to partner with in support of our compliance journey. Some vendors sell the idea that they do the work, but then you end up doing everything. The ambiguity is what killed our last project. BD Emerson’s team has such great technical knowledge and understands the standard so well that they made us comfortable with moving fast. This has led to us closing major enterprise customers that were previously out of reach because of security and compliance.
Lead an enterprise initiative to overhaul the organization's technology stack from ecommerce, corporate tech, and corporate security.
Supported ISO 42001 exercise and served as internal auditor.
Rubrik's privacy and compliance team began with the backbone of BD Emerson. BD Emerson supported building out the privacy program, GRC (ISO 27001, SOC 2, CMMC, FedRAMP), and the appsec function.
We needed a partner who could move quickly, without sacrificing precision. BD Emerson brought the expertise, structure, and speed we were looking for. Their team became an extension of ours, embedding themselves across the organization, guiding us step by step, and giving us confidence in areas we hadn’t tackled before. The internal audit they conducted was so detailed that even the external auditors called it out. Achieving ISO 27001 with zero nonconformities says everything you need to know about the quality of the partnership.
BD Emerson didn’t just help us meet our compliance goals; they integrated security and privacy into the core of our operations. I highly recommend BD Emerson to anyone seeking SOC 2 or GDPR compliance, or simply looking to enhance their security team and boost customer trust in their product and services. Their dedication and expertise have been invaluable to our success.
BD Emerson understood our business requirements and worked side-by-side with us. The policies and controls we developed together not only meet compliance standards but improve how we operate day to day.
From day one, BD Emerson brought urgency, clarity, and a sharp understanding of what truly matters to our business — earning and keeping customer trust. They went beyond helping us meet compliance requirements; they helped build a foundation for secure, scalable growth. That kind of partnership is rare.
BD Emerson didn’t just help us pass an audit—they helped us build a sustainable culture of security.
BD Emerson was essential in helping our company navigate the daunting process of leveling up our security infrastructure. BD Emerson’s impressive expertise and confidence throughout the process helped our team exceed HIPAA and SOC 2 Type 1 standards quickly, distilling what can be an overwhelming process into a streamlined, organized effort. From day one they began adding value and getting us on course. With their help we delivered on a massive security overhaul with both extreme efficiency and thorough attention to details. Because of BD Emerson’s support, we’ve increased our clients’ trust in Titan Intake and the life-changing work it accomplishes for those seeking specialist referrals.
BD Emerson didn’t just help us meet our compliance goals; they integrated security and privacy into the core of our operations. I highly recommend BD Emerson to anyone seeking SOC 2 or GDPR compliance, or simply looking to enhance their security team and boost customer trust in their product and services. Their dedication and expertise have been invaluable to our success.
BD Emerson understood our business requirements and worked side-by-side with us. The policies and controls we developed together not only meet compliance standards but improve how we operate day to day.
From day one, BD Emerson brought urgency, clarity, and a sharp understanding of what truly matters to our business — earning and keeping customer trust. They went beyond helping us meet compliance requirements; they helped build a foundation for secure, scalable growth. That kind of partnership is rare.
BD Emerson didn’t just help us pass an audit—they helped us build a sustainable culture of security.
BD Emerson was essential in helping our company navigate the daunting process of leveling up our security infrastructure. BD Emerson’s impressive expertise and confidence throughout the process helped our team exceed HIPAA and SOC 2 Type 1 standards quickly, distilling what can be an overwhelming process into a streamlined, organized effort. From day one they began adding value and getting us on course. With their help we delivered on a massive security overhaul with both extreme efficiency and thorough attention to details. Because of BD Emerson’s support, we’ve increased our clients’ trust in Titan Intake and the life-changing work it accomplishes for those seeking specialist referrals.