You can deploy it with one person. I've deployed an entire OBIEE installation entirely by myself. It's not recommended, and it's not the best way, but it can be done. I know, I've done it. To administer or manage it once it's in place, the ideal team would be at a minimum a three to four-person team. Some companies, when they say, "We need to put in BI, and we need people to do that," they're also, without saying it, asking for someone to set up a data warehouse, run ETL, build and maintain that, run the BI, build the interface, do the reports, and teach or train the employees, which is something I've done. In that kind of situation, you need a three or four-person team at minimum to distribute everything from the data warehouse work, ETL, report development, training, and so on. If something is already set up or we're talking about a cloud environment, there may be no data warehouse. If it's all cloud-based, there's no maintenance there. There may also be no ETL because it can be built in. It's just maintaining the BI instance. If the person you're asking to maintain the BI system is not asked to train users, you don't need that skill either. So, it can be done by one person. It depends on what the client desires and is expecting, and for the cloud implementation, what other services the client is already paying for.

The complexity varies on a case-by-case basis. In a manufacturing context, the data provided by customers is KPI-based. The deployment duration is highly dependent on the specific case and the dashboard's requirements. For a single dashboard, it might take up to a month. However, it could extend to around three months if you need more complex dashboards with five to six or more KPIs.

We handled the implementation completely in-house, without the assistance of any integrators or consultants. 

We implemented through a vendor. They were expert and it was really easy and successful.

Deployment requires a small team of people. One from admin, another from the development team, and one more.

The implementation was completed in-house.

We handled the implementation with our in-house team. We didn't use outside consultants or anyone like that. 

It was implemented in-house.

We have an expert IT team taking care of the implementation aspect.