SAP Sales Cloud uses Relationship Intelligence to learn who knows who in your organization and uncover the hidden relationships. This helps accelerate your business development with improved client care and supercharge your CRM application by gaining deeper insights into the level of engagement with your external customers.
Benefits of Relationship Intelligence

Uncover Hidden Relationships: Accelerate business development by uncovering hidden relationships.
Strengthen Relationships: Enable sales reps to strengthen their relationships with key contacts.
Warm introductions: Enable sales reps to expand their network easily with warm introductions.
Maintain Relationships: Never lose focus on key clients by following relationship recommendations.

Relationship Intelligence uses the following data for an account:
- Who are the contacts known to you for a particular account, and how well do you know them?
- Who are your colleagues with the best relationship to those contacts?
- What e-mail and calendar activities have been exchanged between you and this external account?

Relationship Intelligence uses the following data for a contact:
- Who are the colleagues with the strongest relationship to this contact?
- Do you've additional relationships at this contact's account?
- What e-mail and calendar activities have been exchanged between you and this external contact?
Hugrank

Relationship Intelligence is designed to build an intelligent network of who knows who in your organization. This network is achieved by connecting to your Office365 e-mail server with all the known relationships along with a measurement of relationship strength or "Hugrank."
Hugrank indicates the strength of a relationship. Hugrank is calculated for contacts, accounts, employees, and relationships that are available in Relationship Intelligence.
This information is available as Relationship Intelligence facet on your account records, contact records, opportunities, and also in the My Network work center view.
Mailbox has been available for the past 365 days. Calendar events are available for the past 120 days and for the upcoming 260 days.Based on the recency and frequency of e-mail and calendar exchanges, hugrank is calculated on a relative index.
Hug rank is indicated in green, orange, and red.
Green (70 to 100) signifies good engagement.
Orange (40 to 69) signifies average engagement.
Red (0 to 39) signifies poor engagement.
The Data Access Model

Relationship Intelligence Service integrates the Customer's email server with SAP Sales Cloud via the Graph API.
The service reads the email and calendar information from the customer's Office365 email server via the Microsoft Graph API and sends the data as a message to the relationship intelligence service to derive Relationship Intelligence engagement insights.
More information can be found in the Solution Guide for all Connector Services and fields that the connector service has access:
https://help.sap.com/doc/300d71dc3d2141fb8941453f95b85541/CSS_SHIP/en-US/CX_NG_CSS_SalesSolGuide.pdf
Additional prerequisites for Microsoft Azure and FAQs can be found here:
Relationship Intelligence: limitations

The following are the limitations of Relationship Intelligence:
- Integrates with Office365 only. No support for Gmail or Microsoft Exchange versions of Outlook.
- Not compatible with the SAP EU Access Service (a service element that restricts remote data access and data storage to the European Union (EU), European Economic Area (EEA), and Switzerland only).
- Not compatible with Internet Explorer, Safari, or nonchromium versions of Edge. Also, note that Sales Cloud supports nonchromium versions of Edge. However, Relationship Intelligence doesn't.
- No right-to-left (RTL) support.
- Data Centers are available only in Europe, North America, and Sydney.