Key Takeaway: Cloud migration fundamentally changes your product’s behavior. If you don’t pressure-test what you’re buying, you’re betting the firm on assumptions. Success comes from slowing down early, when leaders can still interrogate tradeoffs, surface gaps, and make choices they won’t have to unwind later.

Law firms have made meaningful progress moving to the cloud. Nearly every Am Law 100 and 200 firm has migrated email and collaboration to Microsoft 365, unlocking substantial gains in reliability, mobility, and reduced infrastructure overhead.

But that success masks a critical shift. The next phase of cloud adoption is fundamentally different and far less forgiving, and the cost of getting it wrong is significantly higher. The migration of commodity infrastructure is fundamentally different from migrating legal-specific technology, and the lessons from one do not carry over.

For corporate information officers (CIOs) and technologists now facing pressure to move practice management, document management, risk, and billing platforms to the cloud, a more deliberate approach is essential.

The Product You're Buying Is Not the Product You're Leaving

When a legal technology provider offers a cloud version of their on-premises platform, it is tempting to think of it as the same system in a different location. That assumption is usually wrong. 

Legacy legal software has accumulated two decades of functional depth, including granular security models, customized workflows, reporting flexibility, and deep integrations with adjacent systems, built incrementally in response to real firm needs. Cloud iterations of these platforms are, in most cases, ground-up rebuilds. They share a name and a provider, but they are younger products with different constraints. Functionality that your firm has relied on for years may be absent, road-mapped, or delivered differently than you expect. Many firms discover these gaps only after migration, when reversal is no longer practical.

The gaps that cause the most post-migration regret tend to cluster in two areas.

Reporting and Business Intelligence

On-premises platforms typically sit on relational databases that experienced staff can query directly, enabling the kind of ad hoc financial and operational reporting that firm leadership depends on. Cloud platforms frequently abstract away that access, replacing it with a provider-defined reporting layer that is less flexible and slower to evolve. Firms often recognize the loss only after it affects decision making. 

Integrations

Legal operations depend on a web of connections between systems including billing feeds, portal access, conflict databases, and HR platforms. Cloud versions of on-premises software frequently change or eliminate the integration pathways that made those connections work. Integrations work should be renegotiated and revalidated, not assumed to transfer.

The Economics for Cloud Migration Are Real, But the Timeline Is Long

Software providers make compelling total cost of ownership (TCO) arguments for cloud, and those arguments are directionally correct, but incomplete. The cost savings are genuine at scale, but they depend on moving enough systems to the cloud to meaningfully reduce on-premises infrastructure and on a willingness to restructure staffing that most law firms, culturally, are not prepared to act on quickly. Hardware savings don’t materialize until you’ve decommissioned enough to make a difference, and headcount reduction through attrition is slow. During the transition, many firms find themselves paying cloud subscription costs on top of the on-premises and staffing costs they haven’t yet eliminated.

It is also worth being honest about the baseline you're comparing against. A well-maintained on-premises environment with fully depreciated hardware and perpetual licenses is genuinely inexpensive to operate. The problem isn’t the cost, it’s the fragility. An aging storage area network (SAN), a provider ending support on a critical platform version, and a chained upgrade that requires touching five systems to move one, are the real costs of staying put. They also tend to arrive as surprises rather than line items. 

Cloud is best understood not as a cost savings play but as a hedge against technical debt. Firms trade unpredictable, potentially very large future costs for a predictable ongoing premium. That trade makes sense. It must be modeled honestly rather than sold through optimistic projections.

The subscription itself deserves careful attention. Your firm is full of lawyers who negotiate complex agreements for a living, and it’s worth applying that same rigor to your provider contracts. In practice, cloud subscriptions are very difficult to exit because operational and data dependencies make exit disruptive, even when contracts allow it. Do not assume you can leave at renewal. 

More importantly, even if you can exit contractually, the question of whether you can recover your data in a usable form is a separate and serious one. Data portability provisions vary enormously across providers, and the practical reality of extracting years of matter data, billing records, and documents in a format your next system can ingest is often far more difficult than the contracts language suggests. Exit and data rights must be understood before signing, not after.

Plan Deliberately, and Bring Everyone With You

The most common source of timeline disruption in legal cloud migrations is organizational, not technical. Non-IT stakeholders, including your general counsel, ethics counsel, chief information security officer (CISO), and firm leadership, have legitimate authority over decisions that are critical to your project. These decisions include data residency requirements, confidentiality obligations, security architecture, and budget approval. Stakeholders often engage early, return to their primary responsibilities, and reengage when milestones are reached or contracts are imminent. At that point, they may introduce requirements that invalidate earlier decisions. This behavior is predictable. The solution is not to hope for better engagement but to deliberate structure for it. Build formal reengagement checkpoints into your project plan. Require stakeholder sign-off on key decisions in the moment they are being made, not after the fact.

Pay particular attention to your general counsel and ethics counsel. Data residency, client confidentiality, and bar compliance requirements vary by jurisdiction and can introduce constraints invisible to an IT-led planning process until late in the project. Treat ethics input as a dependency, not a courtesy. It is the single highest-leverage action most firms can take to protect their timelines.

Take time upfront to fully understand the functional limitations of the platform you are adopting. Insist on detailed demonstrations of reporting capabilities and integration architecture, not just the core workflow. Ask providers specifically about the gaps between their on-premises and cloud platforms and get answers in writing. Speak with other firms that have completed the migration, not just those in the midst of it. The goal is to surface surprises early while alternatives still exist.

Building a Sustainable Cloud Strategy for Law Firm Technology

The move to cloud is the right direction for legal technology, and firms that approach it strategically will be better positioned operationally and competitively over the next decade. But the decisions made during this transition are largely irreversible in practice, and the consequences of moving too fast or with incomplete information are significant and long-lasting. Go to the cloud, but go deliberately, with clear eyes about the economics, the functionality, and the organizational work required to get it right.

Learn more about Epiq Law Firm Advisory.



Mark Denner, Senior Director
Mark brings 20 years of experience consulting on legal industry technologies at Epiq, helping law firms and legal departments align document management, enterprise search, and risk management with information governance objectives. His work includes system selection, information governance roadmaps, legal taxonomy development, and large-scale document management migrations, with particular depth in law firm conflicts data and need‑to‑know security models. 

Mark has hands-on implementation expertise with iManage and NetDocuments and is certified across Intapp’s full suite of risk and data management technologies.