The initial setup can be done in-house. Companies don't necessarily need to hire a consultant or integrator to get it done. 

I use third-party people to get me set up and build-out, and that's what I continue to do. These third parties aren't resellers. They are freelancers. 

We implemented this solution in-house.

Our consulting practice delivers Dell Boomi integration projects to our clients as stand-alone or as a part of larger NetSuite implementations.

We implemented it ourselves. It is a complete self-service. You don't need any help.

The number of people required for its deployment and maintenance depends on the complexity and size of the project. For example, for the integration of Salesforce with Netflix for the lead to cash use case, you need a maximum of two resources for three weeks.

I'm a consultant. I don't do the implementations myself. I select technologies for clients, and then I coach the clients to use them well. I supervise the partner who integrates them.