I have been using Cloudflare for several years.

I've used the solution for three years.

We have been utilizing Cloudflare's solution for over a year, to be precise, between one and two years. Currently, we are using their SaaS product, Cloudflare, for DDoS and DNS.

I have used Cloudflare DNS management for around seven years, but I have only used the firewall features for four years. 

I have been working with Cloudflare for approximately four years.

I have been using the product for five years. 

I have been using Cloudflare for about two to three years.

I've been using Cloudflare for about three or four years.

I have been working with Cloudflare for more than six years.

We work with many different versions. For new customers, we use the latest version.

I've only been using Cloudflare for a week.

I have been working with Cloudflare for about two years.

I have been using Cloudflare for two or three years. Also, I am using the free plan version.

I have been using the product for two and a half years. 

I've been using it for almost one year.

I have been using Cloudflare for one year.

I have been using the solution for one year. 

I've been using this solution for about three months. 

I have been using the solution for two years.

We moved our DNS to CloudFlare about three years ago.

I have used CloudFlare for some twenty months.

I have used it since 2010; that's about 6 years. They were named as best startup at TechCrunch Disrupt and since then, I've been a user.

I have used it for the last 10 months.

I have used the solution for two years.

We have used this solution for about two years.

I've used this solution for one year. Unfortunately, I'll stop it this month as, rather than being unsatisfied, my needs have changed, and my website no has longer the same traffic. I think that I can (as a System Administrator) handle the security side without it for a while.

I implemented these solutions in 2013.

I have used it for five years.

I have been using Cloudflare for approximately five months.

I've used Cloudflare since 2012 and am currently using the latest version. I've utilized it with several different websites successfully.

I have used it for one year.

I have been using it for at least four years.

I've been using the solution for three years.

I've been using the solution for about two or so years at this point. It's been a while.

2-3 years

More than one year

We've been using it for around two years with its cPanel plugin.
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I have been using it for three months.