Decide on Office 365 Migration Path

Deciding on the best migration path of your users’ email to Office 365 can be difficult. Your migration performance will vary based on your network, existing messaging systems design, mailbox size, migration speed, and so on.

For migrations from an existing on-premises Exchange Server environment, you can migrate all email, calendar items, tasks and contacts from user mailboxes to Office 365. The available methods are cutover, staged, and Exchange Hybrid migrations.

For migrating third-party email to Office 365, you can configure mail flow coexistence if the third-party email provider permits then migrate the mailboxes using IMAP or cutover migration options.

Migrating from Exchange 2003 or Exchange 2007

Number of mailboxes	How quickly do you want to migrate?	Use
Fewer than 150	Over a weekend or a few days.	Cutover
Fewer than 150	Slowly, by migrating a few users at a time.	Staged
Over 150	Over a weekend or a few days.	Staged
Over 150	Slowly, by migrating a few users at a time.	Staged

Migrating from Exchange 2010 or Exchange 2013 or Exchange 2016 or Exchange 2019

Number of mailboxes	How quickly do you want to migrate?	Use
Fewer than 150	Over a weekend or a few days.	Cutover
Fewer than 150	Slowly, by migrating a few users at a time.	Exchange Hybrid
Over 150	Over a weekend or a few days.	Exchange Hybrid
Over 150	Slowly, by migrating a few users at a time.	Exchange Hybrid

Migrating from third-party email system to Office 365

Number of mailboxes	How quickly do you want to migrate?	Use
Fewer than 150	Over a weekend or a few days.	Cutover
more than 150	Slowly, by migrating a few users at a time.	IMAP with mail flow coexistence

If the mailboxes you’re migrating contain a large amount of data, you can also use Office 365 Import Service to import PST files to Office 365.

Azure Stack Pricing Model

Azure Stack is sold as an integrated system, with software pre-installed on validated hardware. Azure Stack comes with two operational modes—Connected and Disconnected. Connected Mode use Azure metering services with the Microsoft Azure Cloud. The Disconnected Mode does not use Azure metering services. The Disconnected Mode is based on capacity pricing model. The Connected Mode is a Pay-as-you-use software pricing model.

Licensing Model

Payment Method	Description	License Type
PAYG	No upfront cost	EA or CSP
Capacity Model	Fixed Fees per annum	EA Only

Windows and SQL License

You have to use licenses from any channel (EA, SPLA, Open, and others), as long as you comply with all software licensing and product terms.

Linux Licenses

You have to use RedHat or other Linux licenses on the Azure Stack if you choose to use Linux Operating Systems. You have to pay to the software vendor for use of their software on the Azure Stack.

Connected Mode for Cloud Service Provider (CSP)

Azure Stack offers pay-as-you-use pricing, just like you get with Azure. Run infrastructure as a service (IaaS) and platform as a service (PaaS) on Azure Stack with no upfront fees, and use the same subscriptions, monetary commitments, and billing tools as Azure. The pay-as-you-use package is available through Enterprise Agreements (EA) and the Cloud Solution Provider program (CSP).

Service Type	Description	Hourly Rate	Monthly Rate
Compute	Base VM	$0.011/vCPU	$8 vCPU
	Windows VM	$0.059/vCPU	$43 vCPU
Storage	Storage		$0.008/GB
	Table & Queue		$0.023/GB
	Unmanaged Disk		$0.015/GB
App Services	Web Apps, API, Functions	$0.072/vCPU	$53 vCPU

The Connected Mode is available through both Enterprise Agreement (EA) and Cloud Service Provider (CSP) partner channel. Azure MSDN, Free Trial, and Biz Spark subscription IDs cannot be used in conjunction with Azure Stack.

Your Azure Stack usage will be metered and integrated into one bill with your Azure usage.

Use cases:

The customer already has Azure Subscription. The customer wants to establish hybrid cloud in conjunction with Azure Cloud.

Disconnected Mode for Azure Stack On-premises

the App Service package, which includes App Service, base virtual machines, and Azure Storage ($400/core/year), and the IaaS package, which includes base virtual machines and Azure Storage ($144/ core/year.) With the capacity model, you use your existing on-premises licenses to deploy Windows Server and SQL Server virtual machines.

The capacity model is available via EA only. It is purchased as an Azure Plan SKU via normal volume licensing channels.

Use Cases

The customer wants to build their own private cloud platform and offer services to their departments and subsidiaries. The purpose of this exercise is to segregate billing of each department but maintain single ICT organisation.

Azure Stack Support

Azure Stack support is a consistent, integrated, hybrid support experience that covers the full system lifecycle. If you already have Premier, Azure, or Partner support with Microsoft, your Azure Stack software support is included. You need only make one call to the vendor of your choice (Microsoft or hardware partner) for any Azure Stack issue.

For up-to-date pricing visit Microsoft website.

Azure AD B2B Collaboration With SharePoint Online

Azure AD B2B collaboration capabilities to invite guest users into your Azure AD tenant to allow them to access Azure AD service Azure AD B2B collaboration invited users can be picked from OneDrive/SharePoint Online sharing dialog boxes. OneDrive/SharePoint Online invited users also show up in Azure AD after they redeem their invitations and other resources such OneDrive for Business, SharePoint Online in your organization.

Azure AD B2B Collaboration (Source Microsoft Corp)

Licensing Requirements for Paid Features:

The customer who owns the inviting tenant must be the one to determine how many B2B collaboration users need paid Azure AD capabilities. Depending on the paid Azure AD features you want for your guest users, you must have enough Azure AD paid licenses to cover B2B collaboration users in the same 5:1 ratio.

Contoso Corp B2B Collaboration with partners (Source Microsoft Corp)

The below guides articulate how to deploy Azure B2B functionality for SharePoint Online.

Turning on Azure AD Integrated App for Office 365

1. Log on to Office 365 portal.office.com using your work or school account.
2. Go to the Office 365 admin center, and from the left navigation bar, click Settings> Services & add-ins
3. On the Integrated apps page, use the toggle to turn Integrated Apps on or off.

Add a B2B User

1. Sign in to the Azure portal as an Azure AD administrator.
2. In the navigation pane, select Azure Active Directory.
3. Under Manage, select Users. Select New guest user.
4. Under User name, enter the email address of the external user. Optionally, include a welcome message.
5. Select Invite to automatically send the invitation to the guest user.
6. To assign Group Permission, Under Manage, select Groups.
7. Select a group (or click New group to create a new one). It’s a good idea to include in the group description that the group contains B2B guest users.
8. Select Members. Add the Guest User.

Add Azure AD B2B Licenses

1. Log on to Azure Portal.Azure.com, Navigate to Azure Active Directory
2. To assign a license, under Azure Active Directory > Licenses > All Products, select one or more products, and then select Assign on the command bar.
3. You can use the Users and groups blade to choose multiple users or groups or to disable service plans in the product. Use the search box on top to search for user and group names.
4. When you assign licenses to a group, it can take some time before all users inherit the license depending on the size of the group. You can check the processing status on the Group blade, under the Licenses

Add guest users to a SharePoint Online App

1. Sign in to the Azure portal as an Azure AD administrator. In the navigation pane, select Azure Active Directory.
2. Under Manage, select Enterprise applications > All applications. Select the application to which you want to add guest users.
3. On the application’s dashboard, select Total Users to open the Users and groups pane.
4. Select Add user. Under Add Assignment, select User and groups.
5. If the guest user already exists in the directory, search for the B2B user. Select the user, click Select, and then click Assign to add the user to the app.
6. The guest user appears in the application’s Users and groups list with the assigned role of Default Access or Under Edit Assignment, click Select Role, and select the role you want to assign to the selected user. Click Select. Click Assign.

Turn on External Sharing for SharePoint Online

1. Sign in to Office 365 as a global admin or SharePoint admin.
2. Select the app launcher icon The app launcher icon in Office 365 in the upper-left and choose Admin to open the Office 365 admin center. (If you don’t see the Admin tile, you don’t have Office 365 administrator permissions in your organization.)
3. In the left pane, choose Admin centers > SharePoint.
4. In the left pane, click sharing.
5. Select “Allow sharing only with the external users that already exist in your organization’s directory.”
6. You can setup additional settings such as Limits external sharing using domains, prevent external users from sharing files, External User must accept sharing invitations.

Turn on External Sharing for Specific Site Collection

1. Sign in to Office 365 as a global admin or SharePoint admin.
2. Select the app launcher icon The app launcher icon in Office 365 in the upper-left and choose Admin to open the Office 365 admin center. (If you don’t see the Admin tile, you don’t have Office 365 administrator permissions in your organization.)
3. In the left pane, choose Admin centers > SharePoint.
4. Click Try the preview to open the new SharePoint admin center.
5. In the left pane, click Site management.
6. Locate the site that you want to update, and click the site name.
7. In the right pane, under Sharing status, click Change.
8. Select your option (see the following table) and click Save.

Redemption through the invitation email

If invited through a method that sends an invitation email, users can also redeem an invitation through the invitation email. An invited user can click the redemption URL in the email, and then review and accept the privacy terms.

1. After being invited, the invitee receives an invitation through email that’s sent from Microsoft Invitations.
2. The invitee selects Get Started in the email.
3. If the invitee doesn’t have an Azure AD account or an MSA, they’re prompted to create an MSA.
4. The invitee is redirected to the Review permissions screen, where they can review the inviting organization’s privacy statement and accept the terms.