Reach is an Alexa Web Search metric that measures the number of people who have the Alexa toolbar or extension installed and who saw your content. If your website has a Reach score of 5,000, this means that 5,000 people out of a sample of 1 million, who have the toolbar or extension installed, saw your site yesterday.

Reactivation MRR is the total amount of recurring revenue generated from reactivated customers who had previously cancelled services and have resumed a subscription within the current tracking period.

The Referrals metric measures the number of potential customers that have been directed to your product through the promotion of an existing customer. Referrals are often generated by word of mouth but can also result from influencer marketing and review sites. Software companies can develop flows that encourage promotion and virality.

Refunded Charges measures the value of payments refunded to your customers.

Refunded Charges Count tracks the total number of payments refunded to your customers.

Renewal rate tracks churn and retention down to the month of invoicing. Rather than track churn and renewals against your total customer count, you track renewals based on each cohort of monthly invoices.

Requester Wait Time (Calendar) is the total combined time a ticket was in the new, open, and on-hold statuses. This number is measured only after a ticket's status changes to pending, solved, or closed. Unlike Full Resolution Time, Requester Wait Time does not take into account pending time – the status set when a ticket is waiting for an answer from the requester.

The Return On Marketing Investment (ROMI) metric measures how much revenue a marketing campaign is generating compared to the cost of running that campaign. Effective marketers are driven to connect their time, energy and advertising spend with results that contribute to company growth. This KPI answers the question, “are we recouping the time and money we spent developing and executing our marketing campaigns?”

Return on Ad Spend (ROAS) is a marketing metric that quantifies the total revenue generated for every dollar spent on advertising. In other words, ROAS measures the effectiveness of your advertising efforts by comparing total ad spend on campaigns to the revenue from those campaigns.

Return on Incremental Invested Capital is an efficiency metric used to measure the change in earnings as a percentage of incremental investments.

Return on Invested Capital is a profitability metric used to measure return on capital investments. It is calculated by dividing Net Operating Profit After Tax (NOPAT) by invested capital.

Retweets is the total number of people who click the retweet button under your tweet. When retweeted, your tweet is posted to that user’s timeline, increasing the reach of your tweet. Retweets are specific to Twitter, however other services such as LinkedIn and Facebook enable sharing and reposting.