I did it myself. 

The installation is quick. It can be done in a couple of hours.

It was implemented in-house. In terms of maintenance, it doesn't require much maintenance. You need just one person to follow the updates. That's about it.

Implementation was done in-house.

I implemented it myself. 

We deployed the solution ourselves using an in-house team. We didn't need the assistance of consultants or integrators from outside firms.

We have implemented this with the in-house team support.

I did not require third-party assistance for the deployment.