I have experience with Anaconda for years.

I have been using the product for five years.

I have been using Anaconda for the last four or five years.

I have been using Anaconda for about six months.

I've been using the solution for eight months.

I have used it in one of my assignments from the university for several months.  

I've been using the solution for two years.

I have been using Anaconda for about a year.

I've been using the solution for 15 years.

I have been using the solution for about two years now.

I've used it for a couple of months. 

I have been using this solution for the last one year since I joined this company. It was suggested by some of my seniors because it would be better for the database and a one-stop solution that pays for all things.