TLT, a top-40 UK law firm, has committed to a 10-year enterprise transformation programme powered by sa.global’s evergreen platform, built on Microsoft Dynamics 365 and Azure. The announcement, made on June 10, 2026, marks one of the most ambitious cloud-driven overhauls in the legal sector, aiming to unify finance, HR, and matter management into a single, intelligent cloud ecosystem.

TLT’s decision underscores a growing appetite among law firms to ditch legacy on-premise systems in favor of cloud-native, continuously updated platforms. The firm, known for advising major financial institutions, retailers, and government bodies, will adopt the sa.global evergreen platform to modernize its core operations. The 10-year scope isn’t just a software swap—it’s a full-scale re-engineering of how the firm runs its business.

What is sa.global Evergreen?

sa.global evergreen is a Microsoft Cloud-based solution designed for professional services firms. It combines Microsoft Dynamics 365 Finance, Human Resources, and Project Operations with Azure’s infrastructure, AI capabilities, and the Power Platform. Unlike traditional on-premise systems that require painful upgrades every few years, the evergreen model is updated automatically in sync with Microsoft’s release waves. That means TLT will always run the latest version—with new features, security patches, and regulatory updates delivered seamlessly.

The platform also integrates with Microsoft 365, Teams, and SharePoint, creating a connected workspace where lawyers can manage matters, track time, and collaborate securely from any device. For TLT, this promises a much tighter integration between business development, matter pricing, resource planning, and billing—areas where disconnected systems often create bottlenecks.

Why TLT Chose Azure and Dynamics 365

TLT’s IT leadership hasn’t publicly detailed every selection criterion, but industry insiders point to several Azure advantages that likely tipped the scales. First, Azure’s UK data centers satisfy strict data residency requirements critical for law firms handling sensitive client information. Microsoft’s UK Azure regions have been live since 2016, offering the compliance certifications that legal regulators demand, including ISO 27001, SOC 2, and the UK’s Cyber Essentials Plus.

Second, Dynamics 365’s modular architecture allows TLT to phase the rollout. The firm can start with finance and HR, then gradually embed matter pricing and profitability analytics without ripping out existing systems overnight. That’s crucial for a 10-year roadmap where business continuity is non-negotiable.

Third, Azure’s AI and analytics stack—from Azure Machine Learning to Power BI—gives TLT a path toward predictive insights. Imagine forecasting matter profitability before it’s even opened, or using Azure Cognitive Services to auto-classify documents. While full AI adoption is likely years away, the foundation will already be in place.

The 10-Year Vision: More Than an Upgrade

A decade-long commitment signals that TLT isn’t merely replacing spreadsheets with a cloud app. The programme, likely structured in multiple phases, will touch every corner of the firm. Common phases in such transformations include:

  • Phase 1: Finance and HR modernization – Deploying Dynamics 365 Finance and HR to streamline payroll, expenses, recruitment, and performance management.
  • Phase 2: Practice management integration – Connecting matter lifecycle management with financial control, enabling real-time visibility into work-in-progress, billing, and collections.
  • Phase 3: Advanced analytics and AI – Leveraging Azure Synapse and Power BI to create firm-wide dashboards that track profitability, utilization, and client trends.
  • Phase 4: Continuous innovation – Riding Microsoft’s six-month update cycles to adopt new capabilities like Copilot for Dynamics 365, which brings generative AI to everyday tasks.

Such an approach mirrors how large enterprises, like the Big Four accounting firms, have transitioned to the Microsoft Cloud over the past decade. TLT is now joining that club, putting itself alongside tech-forward law firms that see hybrid work and digital client expectations as permanent shifts, not pandemic blips.

Law firms have long relied on practice management systems from vendors like Elite, Aderant, or LexisNexis. While capable, these systems often came with cumbersome on-premise installations, complex customization, and costly upgrade cycles. sa.global evergreen takes a different path: it’s built on a platform that Microsoft itself uses for its own operations and that powers thousands of global enterprises.

Because it runs on Dynamics 365 and Azure, TLT gains access to Microsoft’s $20 billion+ annual R&D spend on cloud and AI. The firm won’t need to fund its own custom development for basic functionalities like time entry or billing—those are baked in and continuously improved by Microsoft. Customizations happen in a low-code layer via Power Apps, ensuring that the system remains upgrade-safe without breaking changes.

Additionally, the evergreen model eliminates the dreaded “upgrade project.” In the past, a law firm might spend 18 months and millions of pounds to migrate from one version to the next. With evergreen, updates are incremental and often invisible to end users, delivering a better experience and freeing IT staff to focus on innovation rather than maintenance.

Legal technology buyers consistently rank security, data privacy, and compliance as their top three concerns when moving to the cloud. Microsoft Azure addresses these with a defense-in-depth approach: data is encrypted at rest and in transit, identity is managed via Azure Active Directory (now Microsoft Entra ID) with multi-factor authentication, and role-based access controls limit who can see what matter data.

For TLT, which handles M&A deals, litigation, and regulatory investigations, the ability to segregate client data with precision is non-negotiable. Dynamics 365’s business units and security roles allow the firm to create virtual walls between matters, ensuring that a lawyer working on a banking case can’t accidentally see a retail client’s sensitive files.

Azure also offers immutable audit logs and eDiscovery capabilities, which can be critical if the firm faces a regulatory audit. The platform’s compliance portfolio, including adherence to the UK’s Data Protection Act and the Law Society’s guidance on cloud computing, gives TLT’s partners and clients the confidence that their data is safe.

Real-World Impact: What Changes for TLT’s Lawyers and Staff

For the firm’s 1,500-plus employees across Bristol, London, Manchester, Glasgow, and Belfast, the shift to Dynamics 365 and Azure will mean a more unified user experience. Instead of logging into separate systems for time recording, expenses, and HR, they’ll use a single interface that follows them across devices. Integration with Microsoft Teams means they can file an expense or check a matter’s profitability from within a chat or channel, reducing context-switching.

From a financial management standpoint, the firm’s chief financial officer will finally have a real-time view of firm-wide performance—something that’s notoriously difficult in a sector where billing often lags weeks behind work. With Dynamics 365 Project Operations, TLT can track matter budgets, actuals, and forecasts in one place, spotting overruns before they become client disputes.

HR teams, too, will benefit. Dynamics 365 Human Resources provides self-service portals for leave requests, training, and performance reviews, integrated with LinkedIn Learning and career development tools. In a competitive talent market where law firms fight to retain junior lawyers, a modern, user-friendly HR experience can be a differentiating factor.

TLT’s move isn’t happening in isolation. Over the past five years, several leading UK law firms have migrated core systems to the Microsoft Cloud. Allen & Overy (now A&O Shearman) has experimented with AI contract analysis on Azure, while Linklaters and Clifford Chance have adopted Dynamics 365 for parts of their operations. However, a 10-year, whole-firm transformation of this scale is relatively rare.

Analysts note that law firms often struggle with change management. Lawyers, accustomed to the billable hour, may resist new time-entry tools if they add friction. That’s why sa.global likely emphasized the platform’s user experience—designed to feel like a natural extension of the Office apps they already know. The success of TLT’s programme will largely depend on how well adoption is managed over the first two years.

Cost, too, is a complex equation. While cloud subscriptions shift spending from capital expenditure to operating expenditure, a firm of TLT’s size can expect to pay mid-seven figures annually for Dynamics 365 licenses and Azure consumption. But the return comes from eliminating duplicate systems, reducing manual data entry, and gaining productivity through automation. sa.global and Microsoft often cite a “value realization” model where efficiency gains offset the subscription costs within three to five years.

Why This Partnership Signals Confidence in Microsoft

sa.global, a Microsoft Gold Partner and member of the Inner Circle for business applications, has deep expertise in professional services. TLT’s choice validates its pre-built evergreen platform as a credible alternative to traditional legal software. For Microsoft, it’s another high-profile win in the legal sector—a market that has historically been slow to adopt non-specialist technology.

Microsoft’s Satya Nadella has repeatedly stressed that every company is now a software company, and law firms are no exception. By choosing Azure and Dynamics 365 as its digital backbone, TLT is betting that its future competitive advantage lies not just in legal expertise, but in how well it harnesses data and automation. The firm can now build custom Power Apps for niche workflows, deploy chatbots for client intake, and potentially use Azure OpenAI Service to summarize case law—all while keeping everything anchored in a single, governed environment.

Potential Hurdles and Watchpoints

No transformation of this magnitude is without risk. Cloud migrations can encounter data migration nightmares, especially when pulling decades of matter history from creaky legacy databases. Custom integrations with third-party tools like document management systems (iManage or NetDocuments) must be robust, as any downtime in document access brings legal work to a halt.

User adoption remains the perennial challenge. Lawyers are famously tech-averse when new systems disrupt their billing rhythm. TLT will need a dedicated change management team, executive sponsorship, and perhaps a phased rollout that starts with business services staff before moving to fee earners. Training, champion networks, and visible quick wins (like mobile expense filing) can build momentum.

There’s also the question of lock-in. While Microsoft Azure offers industry-leading capabilities, a 10-year agreement with sa.global ties TLT to that ecosystem. The firm will need to maintain a strong internal team to manage the relationship, negotiate renewals, and ensure the platform evolves with the firm’s strategy—not the other way around.

Looking Ahead: What TLT’s Journey Means for Other Law Firms

When a top-40 UK law firm makes a 10-year commitment to the Microsoft Cloud, it sends a clear message to the market: the cloud is ready for legal prime time. Mid-tier and boutique firms that have been waiting on the sidelines may now accelerate their own evaluations. They’ll look to TLT’s experience—the successes and the stumbles—as a proof of concept.

For sa.global, this deal likely opens doors to other UK and international firms. The evergreen model, combined with a decade-long relationship, offers the stability that risk-averse managing partners crave. Expect more announcements in the professional services space as firms chase the benefits of always-up-to-date technology.

Microsoft, meanwhile, will continue enhancing Dynamics 365 with AI capabilities that could reshape legal work. Copilot for Finance, announced in 2024, already automates variance analysis and collections. In the coming years, we’ll likely see Copilot for legal-specific tasks—document review, clause identification, and risk scoring—baked directly into the platform.

TLT’s 10-year programme is just beginning. If executed well, it could become a blueprint for how modern law firms operate: agile, data-driven, and powered by a cloud that never stands still.