A B-2-B (business-to-business organization) service provider sells products/services/solutions that other businesses require and benefit from. The customer in this case is another organization; we could have large organizations selling to smaller ones or vice versa.
The B2B sector is very large and consists of companies that sell a diverse range of offerings; for example, we have clients ranging from a UK-based company selling skip hire services to other businesses, to a corporate leadership training provider in India, and a business strategy and process consulting firm amongst many others.