Refers to a business of limited size, often with few employees or low revenue. Used in economic, policy, and everyday contexts.
He runs a small business.
A new subsidy program for small businesses has been established.
零細企業 refers to very small, often micro-enterprises with minimal capital, implying a smaller scale than 小規模ビジネス.
Compound of 小規模 (small-scale) and ビジネス (business), a straightforward modern term.