Letter R

RAG is a combination of “search + LLM”: the model first retrieves relevant data from your database, then responds based on it. Fewer hallucinations.

Reach is the number of unique people who saw the content. Not to be confused with impressions: one person can give 5 impressions, but the reach is only him.

Reactivation is the return of customers who have stopped buying through segmentation of the dormant base and targeted offers.

Rebranding is a change in the visual and/or semantic identity of a brand: from restyling the logo to a complete change in positioning.

Reels and Shorts are short vertical videos. The main format of organic reach 2026: algorithms distribute them to a cold audience for free.

Replit Agent is an AI agent in the browser: it writes, runs and deploys code based on the text description of the task.

Retainer is a model of work for a marketer/agency: a monthly fixed payment for the agreed scope of work.

Retargeting is advertising to those who have already touched the brand: been on the site, in the bot, looked at the product. The cheapest CPL is a “warm” audience.

Retention — the percentage of clients who remained active during the period. The inverse metric to churn (retention = 100% − churn).

ROAS (Return on Ad Spend) - revenue ÷ advertising budget. ROAS 3× means each invested ruble returned 3 rubles in revenue.

ROI (Return on Investment) - (profit − investment) ÷ investment × 100%. Unlike ROAS, it takes into account cost, not just revenue.

ROMI - return on marketing investment: profit from marketing divided by marketing costs, as a percentage.