A Lightning email template is a type of email template that can be used to create and send emails from Salesforce. A Lightning email template can include merge fields, images, links, and other formatting options. A Lightning email template can also include a knowledge article as an attachment or a link. A consultant can configure a Lightning email template to send the article to the customer by selecting the Knowledge Article option in the template editor and choosing the article to include. The agent can then use the template to send an email with the article to the customer from the case record page or the Service Console. Verified Reference: Service Cloud Consultant Certification Guide & Tips, Create Lightning Email Templates

The Lightning Service Console is a user interface that allows you to manage multiple records on one screen and quickly access important information. You can use tabs and subtabs to organize your records and switch between them easily. To meet the requirement of viewing the case history of other cases for the same account when viewing a case, you can use account tabs with case subtabs. This means that you open an account record as a primary tab and then open related cases as subtabs under that account tab. This way, you can see all the cases for that account on one screen and compare their case histories. Verified Reference: [Tabs and Subtabs in Lightning Console Apps]

To manage a case handling process that requires each case to go through a series of time-bound steps, defining entitlements and milestones is the recommended solution. This setup allows for the specification of service levels, tracking progress against defined milestones, and ensuring cases progress in a timely manner from submission to closure.

Setting up communication channel layouts in the object manager to use Insert Article into Social post is a solution that can enable article insertion into social interactions in Lightning Knowledge. Communication channel layouts allow administrators to customize how articles appear in different channels, such as email, chat, or social media. Insert Article into Social post is an action that allows agents to insert articles into social posts using Social Customer Service. Verified Reference: : https://help.salesforce.com/s/articleView?id=sf.knowledge_communication_channel_layouts.htm&type=5 : https://help.salesforce.com/s/articleView?id=sf.knowledge_insert_article_content_email.htm&type=5 : https://help.salesforce.com/s/articleView?id=sf.social_customer_service_overview.htm&type=5