What is Microsoft Dynamics 365? A Complete Beginner-Friendly Overview
Ask five people what "we're on Dynamics" means and you may get five answers. One means the finance team runs Business Central. Another means sales lives in Dynamics 365 Sales. A third is still on an on-premises Dynamics NAV or GP system that predates the Dynamics 365 name entirely. Microsoft's naming hasn't helped: apps have been split, merged and renamed several times in recent years.
This overview is for business owners, finance leads and IT managers who want a clear map before speaking to Microsoft or a partner. We'll explain what Microsoft Dynamics 365 is, what each of the main apps does, how they connect with Microsoft 365, Power Platform and Copilot, and how licensing works in principle. At Ferncastle we spend most of our time on the customer-engagement side (Sales, Customer Insights and Customer Service), but we're asked about the ERP apps constantly, so we'll cover both.
What Is Microsoft Dynamics 365?
Dynamics 365 is Microsoft's family of cloud business applications, sold mainly as per-user subscriptions. Microsoft launched the brand in 2016, bringing its ERP heritage (descended from Dynamics AX) and its CRM product (Dynamics CRM) under one name, and introduced Business Central, the cloud successor to Dynamics NAV, in 2018.
The important word is family. Dynamics 365 isn't a single system you install; it's a set of apps, each covering a business area. Most organisations start with one or two and add more over time. The customer-engagement apps share a common data platform, Microsoft Dataverse, which makes them easy to combine. The ERP apps have their own databases and connect to Dataverse and to each other through integrations.
What Are the Main Dynamics 365 Apps?
The ERP apps
Business Central is an all-in-one ERP for small and mid-sized businesses: finance, purchasing, sales orders, inventory, warehousing and projects, with manufacturing and service management in its Premium edition. By ERP standards it's quick to implement, and it's the usual starting point for growing companies.
Finance and Supply Chain Management are Microsoft's enterprise ERP apps, often referred to together as "finance and operations". Finance covers global financials, multi-entity consolidation, budgeting and revenue recognition; Supply Chain Management covers advanced manufacturing, warehousing, transport and planning. Project Operations serves project-based businesses such as consultancies and engineering firms, combining project quoting, resourcing, time and expense, and project accounting.
The customer-engagement (CRM) apps
Sales manages leads, opportunities, accounts and forecasts. Customer Service handles cases, knowledge articles, queues and service-level agreements, with options for chat, messaging and voice. Field Service schedules and dispatches technicians, tracking work orders, parts and customer assets. Customer Insights comes as two connected apps: Customer Insights – Data, which unifies customer data from many sources into single profiles, and Customer Insights – Journeys, the marketing automation app formerly known as Dynamics 365 Marketing.
| App | What it does | Typical buyer |
|---|---|---|
| Business Central | All-in-one ERP: finance, sales, purchasing, inventory | Small and growing mid-sized firms |
| Finance | Enterprise financials, consolidation, global entities | Larger, multi-entity organisations |
| Supply Chain Management | Manufacturing, warehousing and planning at scale | Complex manufacturers and distributors |
| Project Operations | Project sales, resourcing, time and project accounting | Consultancies and project-based firms |
| Sales | Leads, opportunities, pipeline and forecasting | B2B sales teams |
| Customer Service | Cases, knowledge, SLAs and service channels | Service desks and contact centres |
| Field Service | Work orders, scheduling and mobile technicians | Firms that send engineers on site |
| Customer Insights | Unified customer data and marketing journeys | Marketing and data teams |
Business Central or Finance and Supply Chain Management?
This is the ERP question we hear most, even from CRM clients. Business Central suits companies that want one system covering the essentials, with a faster implementation and a lower total cost. Finance and Supply Chain Management suit organisations with many legal entities across countries, complex consolidation, heavy manufacturing or very high transaction volumes, and the budget and internal team to match.
There's no hard cut-off by headcount or revenue; complexity is the better guide. A 300-person single-entity distributor may be very happy on Business Central, while a 150-person group with entities in six countries may need Finance. For a fuller decision guide, see Dynamics 365 Finance vs Business Central.
How Does Dynamics 365 Fit With Microsoft 365, Power Platform and Copilot?
Much of Dynamics 365's appeal lies in what surrounds it.
Microsoft 365
Outlook add-ins let users view and update customer records, track emails and log meetings without leaving the inbox. Teams lets colleagues share and discuss records in chats and channels, and Excel integration means finance users can analyse or bulk-edit data in a tool they already know. For organisations already standardised on Microsoft 365, this is often the deciding factor.
Power Platform and Dataverse
Power Platform is Microsoft's low-code toolkit: Power BI for reporting, Power Apps for custom apps, Power Automate for workflows, and Copilot Studio for building AI agents. Because the customer-engagement apps are built on Dataverse, extending them with Power Apps or Power Automate feels natural. Business Central and the finance and operations apps connect through standard connectors and integrations.
Copilot
Copilot is Microsoft's AI assistant, now built into most Dynamics 365 apps. In Sales it can summarise opportunities and draft emails; in Customer Service it can summarise cases and suggest replies; in Business Central it helps with tasks such as bank reconciliation and product descriptions. Organisations can also build their own agents with Copilot Studio. Features and licensing evolve quickly, so check what your current licences include. For worked examples, see these Copilot use cases across Dynamics 365.
How Does Dynamics 365 Licensing Work?
Microsoft licensing has a reputation for complexity, but the core ideas are manageable. We won't quote prices, which change and vary by agreement, but here's how the model works.
- Per-user subscriptions. Most apps are licensed per named user per month, usually on an annual commitment. Many come in tiers, such as Professional and Enterprise versions of Sales and Customer Service, while Business Central comes in Essentials and Premium.
- Base and attach licences. For the customer-engagement and finance and operations apps, a user's first app is bought as a full-price base licence, and further qualifying apps for the same user can be added as cheaper attach licences. The base licence generally needs to be the highest-priced app that user has. Business Central follows its own simpler model.
- Team Members. Light users who mainly read data, approve requests, record time or make simple updates can often use the much cheaper Team Members licence. It's tightly defined, though: it isn't meant for people doing core sales, service or finance work, and stretching it can cause compliance problems.
- Tenant and capacity licensing. Some products aren't priced per user. Customer Insights, for example, is licensed at tenant level with capacity linked to the number of contacts or profiles, and Dataverse storage is sold as capacity too.
- Where you buy. Most small and mid-sized organisations buy through a Cloud Solution Provider (CSP) partner, who bills them and provides first-line support; larger organisations may buy direct under an enterprise agreement. Annual commitments are typically cheaper than month-to-month terms.
Key takeaway: Dynamics 365 is a family, not a single product. Decide which business problem you're solving, pick the app that fits it, and license each user at the lowest tier that genuinely covers their role.
Where Should a Beginner Start?
Start with the problem rather than the product list. A few patterns we see often:
- A professional services firm outgrowing spreadsheets and a basic CRM often starts with Sales, adds Customer Insights – Journeys for marketing, and connects to its existing finance system.
- A financial services firm with a busy client service team may start with Customer Service, use Sales for relationship management, and add Customer Insights – Data to bring client records together.
- A growing distributor with stretched accounting software usually starts with Business Central, adding Sales later if the pipeline needs more than Business Central's contact management.
- A multi-country group with complex consolidation typically evaluates Finance, often alongside Sales.
Whichever route you take, map your processes and data first and plan integration from day one. If you're still choosing a CRM platform, our comparison of Dynamics 365 vs Salesforce sets out the trade-offs.
Conclusion
Microsoft Dynamics 365 is a family of cloud business apps rather than a single system: Business Central, Finance and Supply Chain Management on the ERP side, and Sales, Customer Service, Field Service and Customer Insights for customer engagement, all connected to Microsoft 365, Power Platform and Copilot. Once you see it as a set of building blocks, the names and the licensing make far more sense. The right starting point is the business problem you most need to solve, licensed at the tier your people actually need.
If you'd like help working out which Dynamics 365 apps and licences fit your organisation, the team at Ferncastle Digital is always glad to have that conversation.
Frequently Asked Questions
Is Microsoft Dynamics 365 an ERP or a CRM?
Both. Dynamics 365 includes ERP apps (Business Central, Finance, Supply Chain Management) and customer-engagement apps (Sales, Customer Service, Field Service, Customer Insights). You license only the apps you need, and they can be connected so customer and financial data flow between them.
Is Dynamics 365 the same as Microsoft 365?
No. Microsoft 365 is the productivity suite (Outlook, Teams, Word, Excel, SharePoint), while Dynamics 365 is a set of business applications. They're licensed separately but designed to work together, which is why many Dynamics 365 users spend their day in Outlook and Teams.
What's the difference between Business Central and Dynamics NAV or GP?
Business Central is the cloud successor to Dynamics NAV and shares much of its design. Dynamics GP is a separate, older product: Microsoft has stopped selling new GP licences and support is time-limited, so many GP customers are moving to Business Central.
How much does Dynamics 365 cost?
It depends on which apps you choose, the tier for each user, how many full and Team Members users you have, and any capacity add-ons, plus implementation and support. Business Central is generally the lowest-cost entry point, while enterprise apps cost more per user and take longer to implement. Check current Microsoft pricing and ask for a licensing review.
Do I need a partner to implement Dynamics 365?
Most organisations use a Microsoft partner for implementation, licensing advice and ongoing support, because configuration, data migration and integration benefit from specialist experience. A single-app deployment can be fairly light-touch, but a partner who knows your industry usually saves time and rework.
