Exchange On-Premise to Exchange Online Migration – Tech-Guide


Exchange On-Premise to Exchange Online Migration in Few Steps


Exchange On-Premise delivers services to users in their own place, whereas Exchange online keeps all the users' data on the cloud. So why is Exchange On-Premise to Exchange Online migration necessary?

With the growing relevance of the cloud, everyone is eager to transition away from the on-premises email platform, moving towards cloud-based services.

Even though both are Microsoft services, Exchange Online has certain distinct advantages that attract customers to migrate to it.

exchange to office 365 migration

How does Exchange Online Outweigh Exchange On-Premises?

  1. Exchange Online allows users to access all its services from any location in the world.
  2. Outages are less likely with Exchange online than in Exchange on-premises.
  3. Users get access to free assistance 24 hours a day, seven days a week, for which they want to perform Exchange to Office 365 migration since the same is not the case with Exchange On-Premise.

It is not easy to transition from an on-premises platform to a cloud-based platform.

It takes a lot of time and effort. Users must work under expert guidance and in an organized manner to have a successful migration. Since it requires loads of technical expertise, users trying it for the first time should take assistance.

Furthermore, when a large sum of money is involved in the migration, you must be cautious and complete the process correctly.

How to Perform Exchange On-Premise to Exchange Online Migration?

The data from Exchange On-Premise, which you want to move to, can be either small or large. The method which will be followed will be explained below according to that.

Let's discuss the methods one by one.

Note: When the amount of data is large, you can either use Cutoff migration, Staged migration, Hybrid migration. Or, if you want to get your work done effortlessly without the need to face many technicalities, you can use a professional tool.

Method 1: Using A Simple Tool Exchange to Office 365 Migration

Since Exchange online is a part of Office 365, the below-mentioned tool can quickly move data to Exchange Online.

The Exchange to Office 365 Migration Tool is a high-demand piece of software that allows you to transfer many user accounts simultaneously.

This tool may be used for selective data export by activating the Date-Based filter. It allows you to choose a time frame for the software to export data.

This program has numerous incredible features that allow you to transfer entire mailbox data quickly.

The process for Exchange On-Premise to Exchange Online migration using the tool includes migration of emails, calendars, and contacts without losing any data.

At the same time, data integrity is also maintained. Furthermore, there will never be a limit on the quantity of data transferred to Exchange Online.

Follow the steps outlined below to learn how to utilize the tool:

Step 1:  After the tool is downloaded, launch it and enter the Source and Destination accounts.


Exchange to Office 365

Step 2:   Select the relevant Categories and Date-filters under Workload Selection for Exchange to Office 365 migration.


migrate exchange to office 365

Step 3:  Enter and confirm the Exchange Admin ID and Password along with the Server IP address.


Exchange to Office 365 migration

Step 4: Enter your Office 365 Admin Email ID and Application ID, followed by a confirmation of your privileges.


Exchange to Office 365 migration

Step 5: Either import users from a CSV template or get all user mailboxes using the Fetch Users option.


migrate exchange data to office 365

Step 6: Map the Source and Destination Mailboxes, validate them and assign them a priority.


migrate exchange to office 365

Step 7. Select Start Migration and wait until all of the mailboxes have been successfully moved.


migrate echange to office 365

Method 2: Manual Method for Exchange On-Premise to Exchange Online Migration

  1. Cutover Migration: If you wish to migrate all mailboxes (fewer than 2,000 mailboxes) at the same time, use this technique. It is compatible with Exchange 2003, 2007, 2010, and 2013.
  2. Staged migration: When the number of mailboxes reaches 2000, phased migration should be used. You can do a phased migration if you are migrating from Exchange 2003 or 2007.
  3. Hybrid migration: While migrating data to Exchange Online, hybrid migration keeps both on-premises and online mailboxes operational. Always utilize hybrid migration if you want to go through Exchange to Office 365 migration (150 to 2000 per user) in small batches. This is the most effective method for moving data to Exchange Online. 

Problems with the Manual Method

  1. Manually, it takes time and results in lengthy outages.
  2. Exchange administrators must be familiar with mailbox migration.
  3. Data loss is possible while migrating to Exchange Online.
  4. Technical expertise is required to perform this process.

Last Words

There are several techniques that a user may utilize to transfer data during the Exchange On-Premise to Exchange Online migration. All of these methods (given the amount of the data) have been discussed in detail.

Experts suggest the tool since it allows the user to quickly complete the transfer procedure with no risk of data loss.

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