The interface is not very intuitive, but once you figure it out there's nothing better to use. It took me quite a while to get it up and running. We are using Affinity with an Azure cloud service to connect our customer data from Dynamics CRM to Salesforce. The integration was seamless! I could see all of my contacts in Dynamics CRM and export them into Salesforce without having to manually sync them. I like that it is very easy to use, has a lot of flexibility, and can be used with multiple different messaging protocols. It is not perfect and there are some things I do not like about it but they have been working on improving it. I am using it in a project where we send files from our desktop application to a server and then back again, so it is important that it works well.
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