The Salesforce connector is a feature that allows you to integrate Marketing Cloud Account Engagement with Salesforce, a customer relationship management (CRM) platform. With this connector, you can sync data, activities, and campaigns between Marketing Cloud Account Engagement and Salesforce. You can only have one Salesforce connector at a time, which means that you can only tie one Salesforce account to one Marketing Cloud Account Engagement account. You cannot have multiple Salesforce accounts linked to one Marketing Cloud Account Engagement account, regardless of the number of accounts, the edition of Marketing Cloud Account Engagement, or the support from Marketing Cloud Account Engagement. Reference: Salesforce Connector, Connect Marketing Cloud Account Engagement and Salesforce

Marketing Cloud Account Engagement forms are the best option if you need to be able to edit and change your form directly. Marketing Cloud Account Engagement forms are built and managed completely in Marketing Cloud Account Engagement, and you can easily modify them using the form builder or the layout template. You can also preview and test your changes before publishing them. Form handlers, on the other hand, require you to edit and change your form on the external platform where it is hosted, and you may need to regenerate the code snippet if you add or remove any fields

According to the Salesforce documentation, the feature in Salesforce that can be enabled to show landing page engagement data on a Salesforce Campaign page layout is Engagement History. Engagement History is a feature that allows users to view and report on how prospects interact with Marketing Cloud Account Engagement marketing assets, such as emails, forms, landing pages, and custom redirects. Engagement History can be enabled for Salesforce Campaigns, Leads, Contacts, Accounts, and Opportunities, and it can display metrics such as views, clicks, submissions, and conversions. Advanced Dynamic Content, Marketing Cloud Account Engagement Activities Visualforce page, and B2B Marketing Analytics are not features that can show landing page engagement data on a Salesforce Campaign page layout, as they are related to other aspects of marketing automation, such as personalization, activity tracking, and analytics. Reference: Salesforce documentation

A segmentation rule is a type of rule that allows marketers to segment their prospects based on specific criteria, such as field values, activities, or scores. A segmentation rule runs only once, as soon as the user completes the rule creation process. The rule will not run again, unless the user manually re-runs it or schedules it to run at a later date. A segmentation rule does not run continuously, up to five times, or as many times as the user specifies when they create the rule1. Reference: 1: Segmentation Rules

Once a Salesforce Opportunity syncs to Marketing Cloud Account Engagement, two actions that can be taken are referencing the Opportunity in automation rules and viewing the Opportunity in Opportunity Reports. Automation rules are rules that run in the background and match prospects based on certain criteria and perform certain actions. You can use Opportunity fields as criteria or actions in automation rules, such as adding prospects to a list based on their Opportunity stage or updating their Opportunity amount based on their score. Opportunity Reports are reports that show the revenue generated by your marketing campaigns and the influence of your marketing activities on the sales pipeline. You can view the Opportunity Reports in Marketing Cloud Account Engagement to analyze the performance of your marketing efforts and optimize your strategy. Manually editing or deleting the Opportunity in Marketing Cloud Account Engagement are not actions that can be taken, as Marketing Cloud Account Engagement does not allow editing or deleting Opportunities. You can only edit or delete Opportunities in Salesforce, and the changes will sync back to Marketing Cloud Account Engagement. Reference Opportunities in Marketing Cloud Account Engagement Automation Rules Overview Opportunity Reports