English to Italian Marketing Computers: Software Campagne di lead generation/acquisizione lead per fornitori di software

Buongiorno a tutti, sto traducendo materiale di front e back-end del Vendor Portal di un'azienda di recensioni di software.
Mi trovo con la string "Expansion Leads" (campagne PPL) che non so bene come rendere in italiano.

Vi copio qui la spiegazione e l'esempio del cliente:

"Let me explain what an Expansion Lead is: Vendors define (in PPL filters) which lead they will buy straight away. For example: I am Oracle. If you have a buyer (lead) who is more than 100 employees and is from Industry Medical Spa, lead must be purchased automatically. But, there are some lead which are close to the filters selection but does not match 100% ( buyer who is from Medical spa industry but has only 50 employees), those are Expansion leads ( close match leads)."

Grazie mille per il vostro aiuto!