A system may include a first processor for storing, in a key-value column-based database, data records from data sources of a cellular network that is transformed into a single format. Customer identifiers may be used as key-values for indexing the data records in the key-value column-based database. The system may include a second processor for creating session records from the data records. Each session record may include a velocity of an endpoint device associated with a session and a number of inter-cell handoff attempts for the session. Each session record may also be labeled with a session identifier comprising a customer identifier and a timestamp. The system may further include a third processor for creating cell-level records from the session records. Each cell-level record may include a plurality of key performance indicators for a cell site of the cellular network segregated by a plurality of endpoint device types.