Many companies still work with Dynamics 365 Customer Engagement On Prem systems, which have been individually adapted over the years. “On Prem” means that the CRM, e.g. Dynamics 365 Sales, is operated on the company’s own servers and does not run in the Microsoft Cloud.
At the same time, an important deadline is approaching. Mainstream support for Dynamics 365 Customer Engagement On Prem will end in January 2027*. Existing systems will continue to function afterwards, but new functions and innovations around Copilot, AI and modern automation will be created almost exclusively in the cloud.
This changes the real question. It is no longer just a question of whether migration is necessary, but how companies want to set up their CRM structure in the future. In this article, you’ll learn why migration is becoming relevant now, what challenges are often underestimated, and what organizations should pay attention to when preparing.
What the January 2027 deadline means in concrete terms
Mainstream support for Dynamics 365 Customer Engagement On Prem will end on January 12, 2027. After that, Microsoft will no longer provide regular feature updates and active further development for this version. Security updates will continue until January 2029 as part of Extended Support.
For many companies, this sounds like enough time at first. In practice, however, it quickly becomes apparent that CRM landscapes can rarely be modernized at short notice. Processes, data, integrations, and customizations have often grown over many years.
This results in long lead times for planning, evaluation and implementation.
| Area | Date | Significance |
|---|---|---|
| Mainstream Support End | January 12, 2027 | Regular updates, new features, and comprehensive Microsoft support end |
| Extended Support End | January 9, 2029 | Security updates expire, after which no more official support |
| AI and Copilot Innovations | already today | New features are created almost exclusively in Dynamics 365 cloud environments |
| Recommended start of migration planning | Now | Migrations often require long lead times due to processes, data and customization |
The real challenge is therefore not only in the official end of support. Many companies are already noticing that their existing CRM structure only supports new requirements to a limited extent.
Why many companies are already under pressure
The pressure is mainly caused by the technological development around modern CRM platforms. Today, new features are clearly being developed for cloud environments.
This applies in particular:
- Microsoft Copilot
- AI-powered automation
- Modern integrations with the Power Platform
- Real-time analytics
- AI Agents and Intelligent Workflows
While Dynamics 365 cloud environments are continuously expanded, many on-prem systems remain largely functionally at the existing level. This increasingly creates a gap between current requirements and the possibilities of existing systems.
This is particularly visible in the area of customer engagement. Customers expect faster responses, better visibility, and consistent communication across channels. At the same time, the requirements for data availability and automation are increasing. Many companies are therefore finding that their existing CRM landscape is finding it increasingly difficult to keep up with these requirements operationally.
Why Many Dynamics Systems Are Becoming a Bottleneck Today
Many Dynamics 365 Customer Engagement On Prem systems have been individually expanded and adapted over the years. Fields, processes, workflows, and integrations have often grown historically. This is not unusual at first. It becomes problematic when these structures are difficult to understand or maintain.
Typical challenges are:
- High technical complexity
- Different data levels
- Inconsistent processes
- Increasing maintenance costs
- lack of transparency about existing adjustments
Often, the real difficulty is not in the CRM system itself, but in the structure that has developed around it over the years. Migrations in particular show how closely processes, data and ways of working are interconnected.
Why migration is often more complex than expected
Many companies initially assume that it is primarily a technical upgrade. In practice, however, it quickly becomes apparent that significantly more areas are affected.
This is because CRM often maps central business processes. Sales, service, marketing and operational processes have direct access to the same data and structures.
Typical challenges are:
- Historically grown processes
- Individual adjustments without clear documentation
- Inconsistent data quality
- Different use of CRM between teams
- Dependencies on other systems
This makes migration not only a technical task, but an organizational decision. Many companies underestimate the effort involved in data cleansing and process evaluation. Older CRM systems in particular often contain fields, workflows or special logics that are no longer actively used today. Without a clear evaluation, these structures are often simply adopted.
Why AI and Copilot Are Changing the Situation
The increasing importance of AI is significantly changing the requirements for CRM systems.
Features like Microsoft Copilot or AI Agents require:
- Consistent data
- Modern integrations
- Structured processes
- Central data availability
These requirements are much easier to implement in modern cloud environments. At the same time, new opportunities are emerging in everyday work.
For example:
- Automatic summaries of customer conversations
- AI-supported preparation of sales appointments
- intelligent prioritization of leads
- automated follow-ups
- Real-time support in service
Many of these features are closely related to Microsoft’s cloud architecture. As a result, migration is not only an infrastructure issue for many companies, but also the basis for future ways of working.
Why many companies simply migrate old problems with them
A common mistake is to transfer existing processes to the cloud unchanged.
This often applies:
- unnecessary fields
- Complex workflows
- Inconsistent data structures
- duplicate processes
- Individual special solutions
As a result, the same problems arise again, only in a new environment. Migrations therefore offer the opportunity to critically question and simplify existing structures. This step in particular is often omitted because the focus is strongly on schedules and technical implementation. In the long term, however, this often leads to new systems remaining unnecessarily complex.
Why CRM migration is a strategic decision today
CRM systems are increasingly becoming the central platform for customer engagement, processes and data.
At the same time, the requirements are growing:
- Transparency
- Automation
- AI Support
- Integrated processes
- Consistent data
This means that migration is no longer just a technical modernization, but a strategic decision about future ways of working and structures. The real question is therefore no longer just how to replace an existing system. Much more important is what role CRM should play in the company in the future.
Conclusion
The deadline in January 2027 creates real pressure to act for companies with Dynamics 365 Customer Engagement On Prem systems. Technically, existing solutions can still be operated, but at the same time, innovations and new functions are increasingly shifting to the cloud.
The real challenge is rarely just in the technology. Processes, data structures and grown adaptations make many migrations more complex than expected.
Companies that plan early and critically evaluate their existing structure create the basis for modern CRM processes, better integrations and future AI use.
Let’s talk briefly about how we can support you in this!
FAQ
When does support for Dynamics 365 Customer Engagement On Premises end?
Mainstream support for Dynamics 365 Customer Engagement Apps Version 9 On Premises will end on January 12, 2027, according to Microsoft. Extended Support runs until January 9, 2029.
Will Dynamics 365 Customer Engagement On Prem be shut down in 2027?
No. Microsoft does not speak of a shutdown. Existing systems can continue to operate. However, from January 2027, mainstream support will end. New functions and regular further development will then no longer be available to the same extent.
Why should companies migrate now?
Because CRM migrations often have long lead times. Processes, data, customizations and integrations must be examined. Microsoft is also providing official resources for migrating from Dynamics CRM On Premises to Dynamics 365 Online.
Which versions can be migrated to Dynamics 365 Online?
Microsoft mentions a source on Dynamics CRM V9.0 or Dynamics 365 9.0 or 9.1 as a prerequisite for the On Premises to Online migration process.
What is the difference between Mainstream Support and Extended Support?
According to Microsoft, customers in mainstream support receive security updates, can request non-security-related updates and use incident support. After mainstream support, only Extended Support remains until 2029.
What are the risks when companies start too late?
Typical risks include tight timelines, unclear data quality, poorly documented customizations, and underestimated integrations. It becomes particularly critical when old processes are transferred to the cloud unchanged.
