Microsoft 365 Consulting – tenant setup, onboarding, and optimization from a single source
Whether a new Microsoft 365 tenant, a planned rollout of additional services, or an environment that has grown organically over the years: ReByteIT plans, sets up, and optimizes – implemented technically, not just recommended. We support both new and existing Microsoft 365 environments.
- Plan and set up new tenants end to end
- Onboard and optimize existing services safely
- Consulting and technical implementation from a single source
Microsoft 365 Consulting at a Glance
- Tenant setup and service onboarding
- Onboarding assessment – clarify prerequisites early
- Solution optimization – improve existing services
- A personal contact instead of an anonymous platform
Six typical starting situations
Not every company starts from scratch – and not every starting point needs the same entry route.
Building a new Microsoft 365 environment
Company formation, change of provider, or consolidation of several legacy systems.
Having a new tenant planned and set up technically
After a spin-off, merger, or strategic realignment.
Onboarding individual Microsoft services safely
Microsoft 365 is in use and another service such as Purview or Security Copilot is to be added.
Needing an assessment before or during onboarding
Clarity about the prerequisites before a new service goes live.
Reviewing and optimizing an existing environment
Organically grown, historically unstructured tenants.
Looking for a personal contact
For planning, implementation, and further development, instead of changing responsibilities.
A new Microsoft 365 environment or an existing tenant? We support both.
Not every company starts from scratch. That is why we support both the complete build-out of new Microsoft environments and the extension and optimization of existing systems.
For new environments
- Structured build-out of modern Microsoft 365 infrastructures
- Secure setup of Microsoft 365 and Entra ID
- Sensible security standards introduced from the start
- A future-proof cloud and security architecture
For existing environments
- Analysis of existing configurations
- Review of existing security solutions
- Optimization of policies and protective mechanisms
- Introduction of additional services where needed
Setting up new Microsoft 365 tenants
Your company needs a new Microsoft 365 tenant – for example after a formation, spin-off, or move from another platform. The goal is a technically well-planned and properly set up tenant that is designed from the start for security, scalability, and your actual needs.
Plan the tenant structure
Planning of the tenant structure, domains, and base settings.
Set up Microsoft 365 and Entra ID
Secure setup of the foundations for identities and collaboration.
Introduce security standards
Fundamental security standards from the start, instead of retrofitting them later.
Align the licensing basis
Aligning the licensing basis with your actual needs.
Onboarding of Microsoft services
Onboard services technically
Entra ID, Defender, Purview, Security Copilot, or Agent 365 – matched to your environment.
Configure appropriately
Configuration in line with your environment and your protection requirements.
Roll out step by step
A controlled rollout instead of uncoordinated activation of every feature at once.
Document
Documentation of the configuration that has been set up.
Onboarding assessment for new Microsoft services
Before a new Microsoft service is introduced, it is often unclear which prerequisites are actually in place. This applies in particular to dependencies, licenses, roles, and security requirements. An onboarding assessment creates structured clarity here, before or during the rollout.
Check technical prerequisites
Review of the technical prerequisites for the planned service.
Reconcile licenses
Comparison of existing licenses with your actual needs.
Evaluate roles and permissions
Evaluation of existing role and permission structures.
Classify security requirements
Classification of security and compliance requirements in the context of the rollout.
“A security assessment is part of our offering and is particularly suitable when the security posture of your overall environment is the focus. An onboarding assessment is narrower in scope and accompanies the rollout of a specific Microsoft service.”
Solution optimization for existing Microsoft services
A Microsoft service is already in use, but may not be fully utilized, has grown organically, or has not been reviewed since it was introduced.
Analyze configuration and usage
Analysis of the current configuration and actual usage.
Evaluate security and governance
Evaluation of security and governance settings.
Reconcile license scope
Comparison of the license scope with actual usage.
Optimize processes
Prioritized recommendations for optimizing operational processes.
“An onboarding assessment accompanies the rollout of a new Microsoft service, before or while it goes into production. Solution optimization comes later: when a service is already in use and the existing configuration, usage, and security are to be improved in a targeted way.”
Which Microsoft services we onboard and optimize
Microsoft Entra ID
Set up and further develop identities, access, and roles securely.
Microsoft Entra ID →Microsoft Defender
Protect endpoints, identities, email, and security events.
Microsoft Defender →Microsoft Purview
Classify and protect sensitive data and implement compliance requirements.
Microsoft Purview →Microsoft Security Copilot
Introduce AI-powered security analysis in a controlled way.
Microsoft Security Copilot →Microsoft Agent 365
Make AI agents visible and establish governance.
Microsoft Agent 365 →How the collaboration works
Clarify the starting point
Record goals, the existing structure (if any), and the planned services together.
Plan
Define the tenant structure, onboarding sequence, or optimization priorities.
Set up and implement
Carry out the technical configuration, onboarding, or optimization measures.
Document and hand over
Document the results and share them in a knowledge transfer session.
What the collaboration changes for you
- A technically well-planned and documented tenant instead of accumulated clutter
- Services are introduced in a controlled way instead of activated without coordination
- Prerequisites and risks are known before the rollout, not only afterwards
- Existing environments become visible and are improved in a targeted way
- A personal contact from the first planning session to ongoing further development
Microsoft 365 Consulting or a different service?
Microsoft Security Assessment
A focused security risk review of your overall environment with a results report. An onboarding assessment as described on this page is narrower in scope and accompanies the rollout of a specific service.
Microsoft Security Assessment →Microsoft CSP
Licensing, contract, and purchasing route for your Microsoft cloud solutions. Licensing and technical setup are two different things – this page covers the technical side, independent of where the licenses are purchased.
Microsoft CSP →Access and identities
Who may access what, and under which conditions?
Microsoft Entra ID →Detecting threats
How are attacks on endpoints, email, and identities detected?
Microsoft Defender →Data and compliance
Classify and protect sensitive information.
Microsoft Purview →Overall security posture
How should our Microsoft security posture be assessed overall?
Security Assessment →Questions about Microsoft 365 Consulting
Do you also handle the technical setup, or does it stop at a recommendation?
On request, we also handle the technical implementation – from tenant setup and service onboarding through to optimization. The consulting does not end with the recommendation.
Do you also support companies that do not yet have a Microsoft 365 tenant?
Yes. The complete build-out of new Microsoft 365 environments is part of the offering, as is support for existing tenants.
What is the difference between an onboarding assessment and a security assessment?
A security assessment reviews the security posture of your overall environment. An onboarding assessment is narrower in scope and reviews prerequisites, dependencies, licenses, roles, and security requirements in the context of rolling out a specific service.
What is the difference between an onboarding assessment and solution optimization?
The onboarding assessment classifies prerequisites and risks before a new service starts. Solution optimization, by contrast, reviews a service that is already running and improves configuration, security, and usage during ongoing operations.
How does Microsoft 365 Consulting relate to Microsoft CSP?
CSP concerns licensing, contracts, and the purchasing route. This page covers the technical setup, onboarding, and optimization – regardless of how your licenses were purchased.
Can we have just individual services onboarded instead of rebuilding the entire tenant?
Yes. Service onboarding is also possible in isolation, for example when Microsoft 365 is already in use and another service such as Purview or Security Copilot is to be added.
What happens with an environment that has grown organically and become unclear?
That is what solution optimization is for: a structured evaluation of configuration, security, usage, governance, and license scope with prioritized recommendations.
Do we receive documentation at the end of the project?
Yes. Results from tenant setup, onboarding, assessment, or optimization are documented and shared as part of a knowledge transfer.
Is Microsoft 365 Consulting also worthwhile for smaller companies?
Yes. The service is aimed primarily at small and medium-sized companies, regardless of whether a tenant already exists or is to be built from scratch.
Request Microsoft 365 Consulting
In a free initial consultation, we clarify which entry route suits your situation – from a new tenant to optimizing an existing environment.
New tenant or new services
You are planning a new Microsoft 365 tenant or would like to introduce additional services.
Discuss Tenant Setup NowBefore or during a rollout
You need clarity about the prerequisites before a new service is introduced.
Request Onboarding Assessment NowExisting environment
You would like to have an existing environment reviewed and optimized.
Have Your Environment Optimized Now
You speak directly with Sebastian Kerssen – working in the Microsoft ecosystem since 2014, with personal consulting and a dedicated point of contact.
