Cyber Week

Table of Contents

  1. Definition
  2. Why Cyber Week matters for marketing
  3. How it works
    1. Common Cyber Week windows
    2. How spending is distributed across the week
    3. How to calculate Cyber Week performance
  4. How to utilize Cyber Week
  5. Cyber Week compared with related periods
  6. Best practices
  7. Future trends
  8. FAQs
  9. Related Terms
  10. Listen: The Agile Brand podcast
  11. Further reading on Agile Brand Guide
  12. Sources

Definition

Cyber Week is the multi-day U.S. retail sales period surrounding Thanksgiving, Black Friday, and Cyber Monday. Most commonly, it means the five days from Thanksgiving Day through Cyber Monday. The same five-day window is also called the Cyber Five.

The term doesn’t have one fixed definition, and the window a source uses changes the numbers it reports. Adobe Analytics, the most widely cited source for U.S. online sales, uses the five days from Thanksgiving through Cyber Monday. Salesforce uses a seven-day window. Its 2025 Cyber Week ran from Tuesday, November 25, to Monday, December 1, adding the two days before Thanksgiving. Some retailers use “Cyber Week” for promotions that continue for several days after Cyber Monday.

That last usage is actually the oldest. When comScore reported a record “Cyber Week” in December 2011, it meant the Monday-through-Friday workweek starting on Cyber Monday. U.S. online spending hit nearly $6 billion across those five days, with three of them topping $1 billion each. Over the following decade, the term shifted backward to cover the days leading up to Cyber Monday, as Thanksgiving and Black Friday online sales grew.

In 2026, the standard five-day Cyber Week runs from Thursday, November 26 (Thanksgiving) through Monday, November 30 (Cyber Monday).

See also: Black Friday and Cyber Monday (BFCM) · Small Business Saturday · Seasonality in Marketing Measurement · Average Order Value (AOV)

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Why Cyber Week matters for marketing

Cyber Week is the highest-revenue stretch of the U.S. online retail year. Treating it as one event rather than a string of separate sale days changes how teams plan budgets, staffing, and measurement.

Adobe recorded $44.2 billion in U.S. online spending over Cyber Week 2025, up 7.7% year over year. Its 2026 forecast is $47.5 billion, which would be about 17.3% of all November–December online spending packed into five days. Five days out of sixty-one carrying more than a sixth of the season’s revenue is a level of concentration few other industries deal with.

Growth has been steady:

YearU.S. online spend, Cyber Week (Adobe)YoY change
2022$35.27 billion+4%
2023$38.0 billion+7.8%
2024$41.1 billion+8.2%
2025$44.2 billion+7.7%
2026 (forecast)$47.5 billion+7.4%

Globally, the numbers are much larger, though they rely on a different window and method. Salesforce estimated $336.6 billion in global online sales for its seven-day Cyber Week 2025, including $79.6 billion in the U.S.

For marketing teams, Cyber Week matters because:

  • Budgets concentrate. Paid search, paid social, retail media, and programmatic spend all peak, and auction prices rise with competition.
  • Owned channels hit their highest volume. Email and SMS calendars often run daily or multiple times a day across all five days.
  • Customer mix shifts. New, deal-motivated customers make up a larger share of buyers than usual, which affects both acquisition cost and long-term retention.
  • Measurement gets harder. A five-day spike distorts weekly reporting, attribution windows, and media mix models. See Seasonality in Marketing Measurement.
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How it works

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Common Cyber Week windows

TermDays coveredLengthWho uses it
Cyber Week / Cyber FiveThanksgiving through Cyber Monday5 daysAdobe, NRF, most press coverage
Cyber Week (extended)Tuesday before Thanksgiving through Cyber Monday7 daysSalesforce
BFCM weekendBlack Friday through Cyber Monday4 daysShopify, many DTC brands
Cyber Week (original sense)Cyber Monday through the following Friday5 dayscomScore (2011); some retailers’ post-Cyber Monday promotions
Black Friday WeekRetailer-defined, often 10+ daysVariesAmazon (its 2025 event ran November 20 through December 1)

When comparing figures across sources or across years, check which window each one uses. A seven-day total and a five-day total can’t be compared directly.

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How spending is distributed across the week

Cyber Monday is the biggest single day online, and Black Friday is close behind. In Adobe’s 2025 data:

Day (2025)U.S. online spendYoY change
Thanksgiving (Nov 27)$6.4 billion+5.3%
Black Friday (Nov 28)$11.8 billion+9.1%
Saturday–Sunday (Nov 29–30)$11.8 billion combined+8.7%
Cyber Monday (Dec 1)$14.25 billion+7.1%
Total$44.2 billion+7.7%

Black Friday has been growing faster than Cyber Monday. Adobe’s 2026 forecast has Black Friday up 9.2% and Cyber Monday up 6.2%, which narrows the gap between the two days.

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How to calculate Cyber Week performance

1. Cyber Week share of season

Cyber Week share (%) = Cyber Week revenue ÷ Holiday-season revenue × 100

Define the season the same way every year. Adobe uses November 1 through December 31.

2. Cyber Week index

Cyber Week index = Average daily revenue during Cyber Week ÷ Average daily revenue in the 30 days before Cyber Week

An index of 4.0 means the brand sold four times its normal daily volume. It’s a quick way to compare the size of the spike across years, even when overall revenue changes.

3. Day mix

Day share (%) = Revenue on a given day ÷ Total Cyber Week revenue × 100

Tracking how revenue splits across the five days shows whether a brand’s customers behave like the market (Cyber Monday-heavy) or skew toward Black Friday or the weekend. That informs where to put email sends and media spend next year.

4. Year-over-year comparison, aligned by event day

Thanksgiving moves between November 22 and 28, so comparing November 28 to November 28 compares different days of the event. Retail analysts align comparisons by event day (Black Friday to Black Friday) or use a retail calendar, such as the NRF 4-5-4 calendar, that keeps weeks consistent from year to year.

A worked example (illustrative, not benchmark data): an outdoor-gear brand averages $25,000 a day in online revenue in the 30 days before Thanksgiving. It brings in $460,000 over Cyber Week, or $92,000 a day. Its Cyber Week index is 3.7. If Cyber Monday accounted for $150,000, Cyber Monday’s day share is about 33%.

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How to utilize Cyber Week

Common use cases:

  • Phased promotions. Brands sequence offers across the five days: early access for loyalty members on Thanksgiving, the broadest offer on Black Friday, bundles or category deals over the weekend, and a final “last chance” offer on Cyber Monday.
  • Staggered category deals. Retailers rotate featured categories day by day to give subscribers a reason to open each email.
  • Budget pacing. Media teams set daily budgets in advance and raise bids on the days their own day-mix data shows the highest conversion rates.
  • Inventory and fulfillment planning. Operations teams forecast order volume by day and plan warehouse staffing, carrier pickups, and buy online, pick up in store (BOPIS) capacity around the peak.
  • Customer service staffing. Order-status, shipping, and returns questions spike right after the event.
  • Testing restraint. Code freezes usually run through all of Cyber Week. Teams typically hold site redesigns, new checkout flows, and major A/B tests until after it ends.
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PeriodLengthTypical definitionMain use
Cyber Week5 or 7 daysThanksgiving through Cyber Monday (or Tuesday before through Cyber Monday)Headline industry reporting; promotional planning
BFCM weekend4 daysBlack Friday through Cyber MondayDTC and ecommerce platform reporting
Black Friday1 dayFriday after ThanksgivingIn-store and online peak
Cyber Monday1 dayMonday after ThanksgivingLargest U.S. online sales day
Holiday season~61 daysNovember 1–December 31 (Adobe; NRF uses the same months)Annual forecasting and results
Golden Quarter~3 monthsOctober–DecemberUK retail and advertising term for Q4
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Best practices

  1. Pick one definition and keep it. Internal reporting should use the same Cyber Week window every year, and should note which window external benchmarks use.
  2. Plan the whole week as one campaign. A single offer architecture across five days, with a clear reason to buy on each day, works better than five unconnected promotions.
  3. Front-load audience building. Grow email and SMS lists and retargeting pools in October and early November, when media is cheaper than during the week itself.
  4. Watch margin daily. Revenue dashboards should show contribution margin alongside sales, so a deep-discount day that loses money gets caught before the next one starts.
  5. Optimize for mobile checkout. Mobile accounted for 57.5% of U.S. online spend on Cyber Monday 2025 (Adobe), and about 70% of online orders globally across Salesforce’s Cyber Week.
  6. Load-test and freeze. Stress-test the site at several times expected peak traffic, and freeze non-essential deploys from the Monday before Thanksgiving through the Tuesday after Cyber Monday.
  7. Align YoY comparisons by event day. Compare Black Friday to Black Friday, not to the same calendar date.
  8. Measure what happens next. Track repeat purchase rates and customer lifetime value (CLV) for Cyber Week-acquired customers against customers acquired at other times.
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AI agents doing more of the shopping. Salesforce estimated that AI and agents influenced about 20% of global Cyber Week orders in 2025, roughly $67 billion in sales. For 2026, it predicts that around one in three ecommerce sites will have a site-specific shopping agent live by Cyber Week. Adobe expects generative AI traffic to U.S. retail sites to grow about 130% over the 2026 season. Product data quality matters more as shopping agents compare offers on a shopper’s behalf. See Agentic Commerce.

A blurrier start date. Amazon’s 2025 Black Friday Week ran 12 days, and many retailers now open “Black Friday” pricing in early November. The five core days still carry an outsized share, but the edges of Cyber Week keep moving outward.

Price-driven growth. Salesforce found that average selling prices rose 6% during Cyber Week 2025 while global order volume rose only 2%. Headline growth increasingly reflects higher prices rather than more items sold.

Social commerce acceleration. Salesforce predicts social commerce will be the fastest-growing transaction channel of the 2026 holiday season, and found social media drove about 15% of global retailer site traffic during Cyber Week 2025.

Rising fulfillment costs. Salesforce predicts retailers will spend an additional $3 billion globally subsidizing free shipping in the 2026 holiday season. That puts pressure on Cyber Week margins, especially for free-shipping-threshold offers.

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FAQs

What is Cyber Week? Cyber Week is the five-day U.S. retail sales period from Thanksgiving Day through Cyber Monday. Some sources use a seven-day window that starts the Tuesday before Thanksgiving.

When is Cyber Week 2026? The five-day Cyber Week runs from Thursday, November 26, through Monday, November 30, 2026. Under Salesforce’s seven-day definition, it would start on Tuesday, November 24.

Is Cyber Week the same as the Cyber Five? Yes, in most usage. Both refer to Thanksgiving through Cyber Monday.

How much do people spend during Cyber Week? U.S. shoppers spent $44.2 billion online during Cyber Week 2025, according to Adobe. Salesforce estimated $336.6 billion in global online sales across its seven-day window.

Which day of Cyber Week has the most sales? Online, it’s Cyber Monday: $14.25 billion in the U.S. in 2025, per Adobe. Black Friday is second online and remains the biggest in-store day.

Why do Cyber Week numbers differ between Adobe and Salesforce? They use different windows (five days versus seven), different geographies (U.S. versus global), and different methods. Adobe measures transactions on U.S. retail sites through Adobe Analytics. Salesforce models global spend using data from more than 1.5 billion shoppers.

Where did the term Cyber Week come from? It grew out of Cyber Monday, which the National Retail Federation’s Shop.org named in 2005. By 2011, comScore was reporting “Cyber Week” results for the Monday-through-Friday period starting on Cyber Monday. The term later shifted to mean Thanksgiving through Cyber Monday.

Does Cyber Week include in-store sales? The term is mostly used for online sales, but some sources (NRF, Salesforce) also report in-store activity during the same window.

How should brands compare Cyber Week results year over year? Compare by event day rather than calendar date, since Thanksgiving’s date changes each year, and use the same Cyber Week window every year.

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  1. Black Friday and Cyber Monday (BFCM)
  2. Small Business Saturday
  3. Seasonality in Marketing Measurement
  4. Average Order Value (AOV)
  5. Conversion Rate
  6. Buy Now, Pay Later (BNPL)
  7. Customer Acquisition Cost (CAC)
  8. Customer Lifetime Value (CLV)
  9. Shopping Agent
  10. Order Management System (OMS)
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Listen: The Agile Brand podcast

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Further reading on Agile Brand Guide

Statistics reflect Cyber Week results through 2025 and 2026 forecasts published as of October 2026. Figures are updated annually after each event.

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Sources

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