What a help desk is
A help desk is the team and tooling that answers questions and resolves problems one ticket at a time. It's reactive and issue-focused — a customer or employee has a problem, the help desk fixes it. For most software companies, "help desk" means customer support: email, chat, and a shared queue of conversations.
What a service desk is
A service desk is a broader, more process-driven function rooted in ITIL. Beyond fixing issues, it manages the whole lifecycle of IT services — service requests, incident management, change management, and asset tracking — typically for internal employees. It's the single point of contact between IT and the rest of the business.
When the distinction matters
If you support customers of a product, you want a help desk — fast, conversational, focused on resolving issues and deflecting repeat questions. If you run internal IT for a larger organization with formal processes, you want a service desk. The terms blur in marketing, so judge by scope: issue resolution (help desk) versus end-to-end service management (service desk).
Which should you use?
For a software company supporting customers, a help desk is what you actually need — conversational, fast, and focused on resolving issues and deflecting repeats. A service desk's ITIL processes and asset management are built for internal enterprise IT, and are overkill for customer support.
