A chatbot is an application that simulates human conversation, either aloud or via text message. Instead of having a conversation with a person, like a sales rep or support agent, a customer can have a conversation with a computer.
Chatbots can reduce the workload of support agents and free them from doing repetitive tasks. Requests like “What is the status of my order” or “please reset my password” can easily be answered/processed by a chatbot without involving a human.
Bots can’t replace humans. But they can complement the support-chat experience, giving customers a friendly greeting and direct ways to get what they need—fast!
Chatbot in Salesforce is named as Einstein Bots.
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With Salesforce Summer 19 scheduled to be released into Production over next couple of weeks, here are 6 ways in which you can familiarize yourself with the new features and functionalities introduced in Summer 19 
Advanced Administrator is the second credential in the role of Admin after the Administrator. It is intended for seasoned Salesforce Administrators who have in-depth knowledge of the platform and have mastered the skills to customize the application at a higher level. This exam tests your knowledge on advanced topics such as Event Monitoring, Salesforce Content, Data Archiving Tools, Change Management, Complex Charting, Dashboard Filters etc. You are also tested on advanced Service Cloud features such as Live Agent, Omni-Channel, Entitlement & Entitlement Processes. The exam includes scenario based questions where you would need to decide the appropriate Process Automation tool. Hence you need to know the capabilities of all declarative tools of Salesforce, plus an overview of Apex would be the icing on the cake. But don’t get overwhelmed by the scope of exam already because we have got your back! 