I will provide a full Business Intelligence solution of different scales, depending on your needs.
It can be a small ad-hoc Power BI that pulls data from various files and databases or it can be a full fledged data warehouse in e.g. Databricks or other cloud providers.
APIs is also a nice option I can add on top of the data layer to make data queryable by users whether REST or GraphQL
We will discuss the requirements together to get a good ground understanding and define the needs and move forward efficiently.
Hope to talk to you soon.
Thank you.