Regarding the decision of increasing the number of users, it depends on the organization's choice, whether to opt for CapEx or OpEx. Both options involve expenses over the years. Building an in-house Exchange solution requires investing in hardware, storage, connectivity, and administrative resources. Office 365 shifts the budget solely to OpEx as a subscription service.

Scalability is another factor. Starting a new company favors Office 365 due to cost efficiency. As the organization grows, the choice depends on available resources and technical expertise. An internal Exchange setup is feasible with skilled engineers, while Office 365 suits those lacking in-house resources.

Scalability-wise, I rate the solution a ten out of ten.

We currently have 12,000 mailboxes that leverage this solution. 

The solution is scalable. It is very easy to expand usage. 

We do not have plans to increase usage at this time. 

The tool is very scalable. It is easy to add additional servers and users. I rate the scalability a nine out of ten. It is very difficult to migrate the server. If a primary Exchange server needs to be moved, it is not very easy. The service has to be shut down completely before it can be moved.

If there were a way to move it in real-time while email is still running, I would give it a ten. However, at the moment, we have to shut down the server and migrate or scale it to bigger capacity servers or the cloud. About 100 people in my organization are using the product. It is extensively used in my organization. As the organization grows, we will increase the usage.

The solution is scalable. 

This is a scalable solution. We already have over 10,000 users in Microsoft Exchange and the total size of the databases exceeds several hundred terabytes.

We have 4500 Microsoft Exchange users in our organization. We plan to increase the number of users up to 5000. It is a scalable platform. I rate the scalability a ten out of ten.

As long as you have a good plan, Microsoft Exchange can scale very well. However, the solution does consume a lot of web resources if deployed on physical hardware or on VMware. For example, I have an organization that has 200 users and Microsoft has eaten up more than 100 gigabytes of memory.

If you use Microsoft Hyper-V, the scalability is good. 

It is quite scalable when it comes to Microsoft products. I would rate the scalability a ten out of ten. 

We all use this solution in our organization. 

It is very easy to scale. Just add on licensing and keep working the same way.

There are around eight end users in our company. It's suitable for our current level. We're a small company, so it's quite okay.

The solution is quite scalable. We have over 1,000 users. 

It is a very scalable tool. In my last company, the solution had more than five thousand users. Now, thirty users use the solution. Considering the upcoming year, there are no plans to increase its usage.

It is a scalable product. A company would have no issues if it needed to expand. 

The solution is mainly used by all end-users. Everyone in the company has it. That's about 1,500 users.

The scalability of Microsoft Exchange is good but it depends on the license.

We have approximately 4,000 users using the solution.

I have found Microsoft Exchange to be scalable.

The solution is quite scalable.

We have about 150 people on the solution currently. Everyone is pretty much using it. Right now, we’re just sticking to the basics. I’m not sure if we have plans to increase usage.

I'm happy with the scalability. 

We have about ten people using the solution in our company; however, our customers that we support number in the thousands. 

If we do get additional people, we will increase usage. 

I haven't tested the scalability. Most of my applications that I just use for my own work. 

While it's used in the company, I just use it for my own personal purposes, such as retrieving email. 

It is a scalable product. You can expand it.

I can’t say how many people in our organization use it.

I rate Microsoft Exchange's scalability a nine out of ten. My company has around 4000 users. 

Microsoft Exchange is a scalable solution.

The solution is scalable. We have approximately 300 users using the solution and there are some companies that have 10,000 users.

Microsoft Exchange is scalable, but it depends on the company and how much they're willing to pay. Scalability is only limited by the price.

We have 132 Microsoft Exchange users in our organization. It has a good scalability.

Everyone in the company is using Microsoft Exchange.

We are a mid-size company with 350 employees. We haven't experienced any problems with scalability or faced a situation where we need to quickly increase the capacity of the system. The company has grown over the last ten years and has added around 100 employees. It has worked for us in terms of scalability, but I don't know if it works for companies bigger than ours.

We have all kinds of users. There is a mix of different functions that are using the system. Our core business is for operating power plants, so our employees are plant operators. Half of our users are plant operators, and we also have a mix of engineers, accountants, commercial staff, legal department, and HR department. 

Exchange is 100% scalable. More than 100 of my customers use Microsoft Exchange, and some of the larger ones have more than 10,000 users.

70 percent of our company is using Microsoft Exchange. We have plans to increase our usage. We have a large company.

Microsoft Exchange's scalability is very good, with load balancing and failover switching features.

The solution has been scalable so far. We have no problems expanding it.

In our company, we have several thousand people that use the solution.

The solution is scalable. There are about 70 users working with it on a daily basis in our organization. 

You can scale it horizontally by adding several servers behind the load balancer if you want. We have more than 20,000 users.

The scalability of Microsoft Exchange is good.

I haven't run into any scalability problems. However, I've run into several large multinational companies that I know do run into issues, and they have to merge two separate something together.

The product is scalable.

This product is reliable and very scalable. We have almost 5,000 users at the moment.

I have found Microsoft Exchange scalable.

We have approximately 250 users using this solution.

I rate Microsoft Exchange a ten out of ten for scalability. Approximately 2,000 users are using Microsoft Exchange in our company.

The scalability is fine. In our organization, 1000 employees use the solution.

The stability can depend on the user's internet speed. If the speed is good then the solution can be scalable.

We have approximately 3,000 to 4,000 users using this solution.

There are some limitations when it comes to scalability, but Microsoft always continues to improve it. Now I'm serving more than 2,000 users, and I think my company serves about 10,000 users.

We have not had scalability concerns. We had already planned for scalability and everything, and when we started we were only ten user accounts but we got thousand users so we planned for a thousand users so we never had any issue. We still have room for expansion so it's not an issue for us.

In terms of current users, I think we have about 3,000 or 4,000.

They are not dedicated solely to the Exchange. They are also supporting other software technology solutions.

We've had no issues with scalability.

The solution can scale up to whatever number of users one desires. This depends on one's infrastructure.

The solution is scalable. 

It is scalable. We currently have 2000 users.

Everybody in our company uses the solution, however, we're pretty small. There are only 20 of us. I'm not sure how it scales, as we wouldn't need it to.

I think Exchange is somewhat scalable, but not exactly. For example, if we ever need to update our server, we have to create another server and migrate the mailboxes from one server to another. So, it's only somewhat scalable, not fully.

It's a scalable solution. There are approximately 100 people using this product.

90% of our customers are using it, whereas 10% are using other solutions.

We plan to continue selling this product.

We didn't have any need to scale it. We have got the same number of people in our company. We have 20 users at the moment. They are accountants and engineers at the job sites.

Exchange is very easy to scale and we have approximately 1,000 users.

Microsoft Exchange is a scalable solution.

I have 10 clients with approximately 200 licenses.

Microsoft Exchange is scalable.

We have 600 users using this solution in our organization.

My impression is that it's scalable. We have approximately 1,000 users.

The solution is stable, but it could improve. It's crashing if there is a big mail database.  The Zimbra solution is better in this area.

We have approximately 200 people using this solution and we plan to continue to use this solution.

We have approximately 20,000 users using the solution.

You can add multiple lots and expand the solution so it is very scalable.

Exchange is very scalable, it's one of the most important things about this software.

Exchange is scalable.

This is a highly scalable email platform.

We support 15,000 end-users for many different companies.

Microsoft Exchange is highly scalable.

No.

It is scalable. Around 100 users in our company are using it.