A knowledge base (KB) is a collection of information, articles, documents, and other resources that are organized and structured to allow easy access and retrieval of information. It is a central repository of information and knowledge that can be used by employees, customers, or other stakeholders to find answers to questions, troubleshoot problems, or learn about a specific topic.

Knowledge bases can be used for a variety of purposes, such as providing technical support, training, or onboarding employees, and also can be used as a customer service tool. They can be created and maintained by a company's internal teams or by third-party vendors.

Knowledge bases are often organized into categories, topics, or searchable keywords, and they may include a search function or navigation menu to help users find the information they need. They can also include multimedia elements such as images, videos, or audio recordings.

Knowledge bases can be accessed through a web-based interface, mobile app, or integrated into other systems such as customer relationship management (CRM) or enterprise resource planning (ERP) systems. They can also be used to automate some customer service tasks, such as responding to frequently asked questions.