Top Facebook Advertising Agencies
-
$1,000+$25 - $49 / hr2 - 9
Services provided
Focus Areas
INFASO is a small Digital Strategy company. Founded in 2019, the team provides Digital Strategy and Social Media Marketing.
Read more -
Undisclosed< $25 / hr2 - 9
Services provided
Focus Areas
Kinova digital marketing is an Advertising company. They are in Eldoret, Kenya and have small team. They provide Advertising and Digital Strategy.
Read more -
$1,000+< $25 / hr2 - 9Surrey, Canada
Services provided
Focus Areas
Azeal Digital Marketing Agency is a Surrey, Canada-based social media marketing firm. They focus on Social Media Marketing and Email Marketing.
Read more -
$5,000+$25 - $49 / hr2 - 9
Services provided
Focus Areas
Founded in 2014, Kinshasa Digital Marketing is a small social media marketing company. Their team focuses on Social Media Marketing and Search Engine Optimization.
Read more -
$1,000+< $25 / hr2 - 9Sahibzada Ajit Singh Nagar, India
Services provided
Focus Areas
Icnofy Technologies is a social media marketing company. Their team is in Sahibzada Ajit Singh Nagar, India. The company offers Social Media Marketing and Search Engine Optimization.
Read more -
$1,000+< $25 / hr2 - 9
Services provided
Focus Areas
Established in 2011, WebArray is a social media marketing agency. Headquartered in Sahiwal, Pakistan, the team focuses on Social Media Marketing and Content Marketing.
Read more -
$1,000+$50 - $99 / hr2 - 9Watauga, TX
Services provided
Focus Areas
Mrs. Smith Assist is a social media marketing company launched in 2019. Their team specializes in Social Media Marketing and Email Marketing.
Read more -
$5,000+$100 - $149 / hr2 - 9
Services provided
Focus Areas
Headquartered in New York, New York, Spark Climb is a social media marketing agency. Their services include Social Media Marketing and Pay Per Click.
Read more -
$1,000+Undisclosed2 - 9Newport Beach, CA
Services provided
Focus Areas
Established in 2020, YouGrow Media is a small Advertising company. Their team offers Advertising and Branding.
Read more -
$1,000+$100 - $149 / hr2 - 9Southbank, Australia
Services provided
Focus Areas
Social media marketing company Sky Vision Marketing focuses on Social Media Marketing and Search Engine Optimization. They were established in 2024.
Read more -
$5,000+$50 - $99 / hr2 - 9
Services provided
Focus Areas
Navees Infotech is a social media marketing firm. Founded in 2015, the company is headquartered in New York, New York. Their team focuses on Social Media Marketing and Content Marketing.
Read more -
$1,000+$25 - $49 / hr2 - 9Gorakhpur, India
Services provided
Focus Areas
Located in Gorakhpur, India, Digital Bull is a small social media marketing firm. The team specializes in Social Media Marketing and Content Marketing.
Read more -
Undisclosed$50 - $99 / hr2 - 9Kallithea, Greece
Services provided
Focus Areas
Launched in 2021, Untamed, a small Digital Strategy company, is in Kallithea, Greece. Their services include Digital Strategy and Social Media Marketing.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Social media marketing agency Evans Above is based in Sandbach, England. They offer Social Media Marketing and Email Marketing.
Read more -
$1,000+$25 - $49 / hr2 - 9
Services provided
Focus Areas
Gerico Agency is a Milano, Italy-based Advertising company. Founded in 2021, the team focuses on Advertising and Digital Strategy.
Read more -
$1,000+$25 - $49 / hr2 - 9
Services provided
Focus Areas
Thin Media is a web development firm. Founded in 2022, the agency is based in Lahore, Pakistan. Their team focuses on Web Development and Social Media Marketing.
Read more -
$1,000+$50 - $99 / hr2 - 9
Services provided
Focus Areas
Aadi Digital Office, an Advertising company, was launched in 2020. The team focuses on Advertising and Social Media Marketing.
Read more -
$1,000+$50 - $99 / hr2 - 9
Services provided
Focus Areas
Marketing Strategy company Augebitur is located in Gällivare, Sweden. Established in 2024, the team offers Marketing Strategy and Social Media Marketing.
Read more -
$1,000+< $25 / hr2 - 9
Services provided
Focus Areas
Digi IT Solution is a social media marketing company. The Lucknow, India-based company was launched in 2023. Their team focuses on Social Media Marketing and Web Design.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Haystack SEO is a SEO services firm. The Gqeberha, South Africa-based team offers Search Engine Optimization and Pay Per Click.
Read more -
$1,000+$200 - $300 / hr2 - 9
Services provided
Focus Areas
Curated Agency is a PR firm. Established in 2016, the company is in North Strathfield, Australia. Their services include Public Relations and Marketing Strategy.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Founded in 2025, Hometown Beat is a small social media marketing firm. Their team offers Social Media Marketing and Search Engine Optimization.
Read more -
Undisclosed$25 - $49 / hr2 - 9
Services provided
Focus Areas
Small social media marketing firm Indredesign, is headquartered in Vilnius, Lithuania. Their services include Social Media Marketing and Content Marketing.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Spruik is a social media marketing agency. Their small team of employees is in Richmond, Australia. Their team offers Social Media Marketing and Web Development.
Read more -
Undisclosed$25 - $49 / hr2 - 9Ahmedabad, India
Services provided
Focus Areas
PPC Ads Manager is a PPC company launched in 2025. Their services include Pay Per Click and Social Media Marketing.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Launched in 2021, The KIKA is a branding agency. Located in Navi Mumbai, India, the team offers Branding and Social Media Marketing.
Read more -
$1,000+$100 - $149 / hr2 - 9
Services provided
Focus Areas
Nflux Digital is a web design company. The company is in Rutherglen, Scotland. Their services include Web Design and Generative AI.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Africa O’Clock is an Advertising company. The team provides Advertising and Public Relations and is headquartered in Abidjan, Côte d'Ivoire.
Read more -
UndisclosedUndisclosed2 - 9
Services provided
Focus Areas
Located in Delhi, India, Thydigital is a small social media marketing company. The team provides Social Media Marketing and Search Engine Optimization.
Read more -
UndisclosedUndisclosed2 - 9Madrid, Spain
Services provided
Focus Areas
Tiendas y Apps S.L., an Email Marketing company, is located in Madrid, Spain and Santander, Spain. The team provides Email Marketing and Performance Marketing.
Read more -
Undisclosed< $25 / hr2 - 9
Services provided
Focus Areas
Avin Business Solutions is a Digital Strategy company. They are located in Old Bridge, New Jersey and have small team. They offer Digital Strategy and Social Media Marketing.
Read more -
$1,000+$25 - $49 / hr2 - 9Karachi, Pakistan
Services provided
Focus Areas
Email Marketing company Progressive Solution is headquartered in Karachi, Pakistan. Established in 2025, the team focuses on Email Marketing and Search Engine Optimization.
Read more -
$1,000+$25 - $49 / hr2 - 9Lucknow, India
Services provided
Focus Areas
Pixel Pulse Digital Venture is a Lucknow, India-based social media marketing company. Their services include Social Media Marketing and Search Engine Optimization.
Read more -
UndisclosedUndisclosed2 - 9Stockport, England
Services provided
Focus Areas
Perpetual10 is a social media marketing company. They focus on Social Media Marketing and Content Marketing and were launched in 2020. The firm is located in Stockport, England.
Read more -
$1,000+< $25 / hr2 - 9Noida, India
Services provided
Focus Areas
Established in 2019, Mark 42 Digital Agency, a small web design company, is headquartered in Noida, India. Their team specializes in Web Design and Web Development.
Read more -
$5,000+$50 - $99 / hr2 - 9
Services provided
Focus Areas
SCITSOL is a web design agency. They were founded in 2026, and their services include Web Design and Search Engine Optimization.
Read more -
UndisclosedUndisclosed2 - 9Albourne, England
Services provided
Focus Areas
CK and Jones Ltd, a small SEO agency, is located in Albourne, England. The team provides Search Engine Optimization and Social Media Marketing.
Read more -
$1,000+< $25 / hr2 - 9Torrance, CA
Services provided
Focus Areas
Established in 2020, SocialHyperZone is a social media marketing agency. In Torrance, California, the team offers Social Media Marketing and Advertising.
Read more -
$1,000+< $25 / hr2 - 9Gandhinagar, India
Services provided
Focus Areas
The Goal Media is a SEO agency. They are based in Gandhinagar, India and have small team. They specialize in Search Engine Optimization and Content Marketing.
Read more -
Undisclosed< $25 / hr2 - 9
Services provided
Focus Areas
AK Studios is a video production agency. Launched in 2022, the firm is headquartered in Islamabad, Pakistan. Their team focuses on Video Production and Video Marketing.
Read more -
$1,000+$25 - $49 / hr2 - 9
Services provided
Focus Areas
IB DIGITAL SERVICES, a SEO agency, was founded in 2020. The team specializes in Search Engine Optimization and Social Media Marketing and is based in Sadiq Abad, Pakistan.
Read more -
$1,000+< $25 / hr2 - 9Castlegar, Canada
Services provided
Focus Areas
SEO Shouts is a small SEO company established in 2020. Their team offers Search Engine Optimization and Social Media Marketing.
Read more -
$1,000+$300+ / hr2 - 9Sydney, Australia
Services provided
Focus Areas
Founded in 2015, GCI MEDIA GROUP is a small social media marketing company in Sydney, Australia. Their team specializes in Social Media Marketing and Advertising.
Read more -
$1,000+Undisclosed2 - 9Green Bay, WI
Services provided
Focus Areas
Founded in 2014, SEO Website Masters is a small Green Bay, Wisconsin-based SEO agency. Their team offers Search Engine Optimization and Custom Software Development.
Read more -
UndisclosedUndisclosed2 - 9Mumbai, India
Services provided
Focus Areas
Founded in 2020, Comaag is a Digital Strategy company. The company specializes in Digital Strategy and Content Marketing, and is small.
Read more -
$1,000+$25 - $49 / hr2 - 9Ranchi, India
Services provided
Focus Areas
Optimize For SEO : SEO Consultant In India, a social media marketing agency, was launched in 2017. The company focuses on Social Media Marketing and Search Engine Optimization, and is small.
Read more -
$1,000+$25 - $49 / hr10 - 49Elmsford, NY
Services provided
Focus Areas
See all 1 projectsFirst Digital Agency offers specialized SEO and digital marketing services, focusing on growing clients’ online presence on Google and social media. Reviews highlight the agency's dedication, effective communication, and ability to deliver quality results promptly, with clients noting significant increases in website sales and overall satisfaction with their performance.
-
$1,000+< $25 / hr10 - 49Wilmington, DE
Services provided
Focus Areas
See all 1 projectsElara Digital offers comprehensive graphic design services, including logo creation and flyer design. The overall feedback highlights their excellent project management, timely delivery, and strong communication throughout the engagement. Clients express satisfaction with the value for money and alignment with company values.
-
$1,000+$25 - $49 / hr10 - 49Alexandria, VA
Services provided
Focus Areas
See all 1 projectsClixtalk specializes in creating and hosting websites, demonstrated through their successful development of a portfolio website for a professional artist. Clients highlight Clixtalk's personable and professional service, effective communication, and alignment with client needs as key strengths, with no noted areas for improvement, suggesting high satisfaction with their offerings.
-
Undisclosed$25 - $49 / hr10 - 49Karachi, Pakistan
Services provided
Focus Areas
ROASlift, a SEO agency, specialize in Search Engine Optimization and Web Development. They were established in 2022.
Read more
Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.
Get My Matches
Tell us what you need — we’ll match you with top agencies and their real-time quotes in minutes.
Get My QuotesWhy Trust Clutch
At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.
Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.
Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.
We evaluate service providers using a structured methodology that combines:
- In-depth client interviews and ratings
- Comprehensive project details
- Market presence
- Portfolio examples and industry recognition
This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.
We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.
Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.
List of the Top 15 Facebook Advertising Services
-
$1,000+$100 - $149 / hr10 - 49
Ability to deliver
37.6/40.019.6/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
70% Social Media Marketing40% Facebook Advertising30% Other -
$1,000+$100 - $149 / hr250 - 999Paramus, NJ
Ability to deliver
38.2/40.020/20 Reviews10/10 Clients & Experience8.2/10 Market PresenceService focus
10% Social Media Marketing45% Facebook Advertising90% Other -
$1,000+$25 - $49 / hr250 - 999Arlington Heights, IL
Ability to deliver
36.7/40.020/20 Reviews10/10 Clients & Experience6.7/10 Market PresenceService focus
10% Social Media Marketing40% Facebook Advertising90% Other -
$1,000+$50 - $99 / hr10 - 49Atlanta, GA
Ability to deliver
33.7/40.019.2/20 Reviews10/10 Clients & Experience4.5/10 Market PresenceService focus
70% Social Media Marketing50% Facebook Advertising30% Other -
$25,000+$200 - $300 / hr250 - 999Washington, DC
Ability to deliver
37.3/40.020/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
20% Social Media Marketing15% Facebook Advertising80% Other -
$1,000+$100 - $149 / hr50 - 249Bel Air, MD
Ability to deliver
35.1/40.020/20 Reviews10/10 Clients & Experience5.1/10 Market PresenceService focus
25% Social Media Marketing70% Facebook Advertising75% Other -
$1,000+$150 - $199 / hr10 - 49Tempe, AZ
Ability to deliver
38.6/40.019.6/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
10% Social Media Marketing35% Facebook Advertising90% Other -
$1,000+$50 - $99 / hr50 - 249Kyiv, Ukraine
Ability to deliver
36.6/40.020/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
30% Social Media Marketing25% Facebook Advertising70% Other -
$1,000+$25 - $49 / hr250 - 999Pearland, TX
Ability to deliver
34.6/40.020/20 Reviews9.7/10 Clients & Experience5/10 Market PresenceService focus
15% Social Media Marketing50% Facebook Advertising85% Other -
$25,000+$150 - $199 / hr10 - 49New Gloucester, ME
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% Social Media Marketing35% Facebook Advertising90% Other -
$5,000+$50 - $99 / hr10 - 49Berlin, Germany
Ability to deliver
36.1/40.020/20 Reviews10/10 Clients & Experience6.1/10 Market PresenceService focus
40% Social Media Marketing25% Facebook Advertising60% Other -
$5,000+$100 - $149 / hr10 - 49Brooklyn, NY
Ability to deliver
34.2/40.019.2/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
45% Social Media Marketing40% Facebook Advertising55% Other -
$1,000+$100 - $149 / hr50 - 249Costa Mesa, CA
Ability to deliver
35.3/40.020/20 Reviews10/10 Clients & Experience5.3/10 Market PresenceService focus
10% Social Media Marketing50% Facebook Advertising90% Other -
$1,000+$100 - $149 / hr10 - 49Mooloolaba, Australia
Ability to deliver
35/40.020/20 Reviews9.7/10 Clients & Experience5.3/10 Market PresenceService focus
10% Social Media Marketing60% Facebook Advertising90% Other -
$1,000+$100 - $149 / hr50 - 249Woodmere, NY
Ability to deliver
35.7/40.020/20 Reviews10/10 Clients & Experience5.7/10 Market PresenceService focus
10% Social Media Marketing40% Facebook Advertising90% Other -
$5,000+$150 - $199 / hr50 - 249Marion, IL
Ability to deliver
37.6/40.020/20 Reviews10/10 Clients & Experience7.6/10 Market PresenceService focus
10% Social Media Marketing20% Facebook Advertising90% Other -
$5,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
Ability to deliver
34/40.019/20 Reviews10/10 Clients & Experience5/10 Market PresenceService focus
35% Social Media Marketing30% Facebook Advertising65% Other -
$5,000+$150 - $199 / hr10 - 49Indianapolis, IN
Ability to deliver
31.2/40.015.8/20 Reviews9.4/10 Clients & Experience6.1/10 Market PresenceService focus
100% Social Media Marketing50% Facebook Advertising -
$50,000+$200 - $300 / hr250 - 999Staten Island, NY
Ability to deliver
33.6/40.019.2/20 Reviews9.6/10 Clients & Experience4.8/10 Market PresenceService focus
30% Social Media Marketing15% Facebook Advertising70% Other -
$1,000+$100 - $149 / hr10 - 49Langley, Canada
Ability to deliver
34.9/40.020/20 Reviews10/10 Clients & Experience4.9/10 Market PresenceService focus
25% Social Media Marketing40% Facebook Advertising75% Other -
$5,000+$50 - $99 / hr10 - 49Kyiv, Ukraine
Ability to deliver
35.7/40.019.8/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
20% Social Media Marketing35% Facebook Advertising80% Other -
$1,000+$50 - $99 / hr10 - 49București, Romania
Ability to deliver
31.1/40.017/20 Reviews10/10 Clients & Experience4.1/10 Market PresenceService focus
65% Social Media Marketing50% Facebook Advertising35% Other -
$5,000+$100 - $149 / hr50 - 249Atlanta, GA
Ability to deliver
33.8/40.019.4/20 Reviews10/10 Clients & Experience4.4/10 Market PresenceService focus
50% Social Media Marketing15% Facebook Advertising50% Other -
$1,000+$150 - $199 / hr10 - 49Montréal, Canada
Ability to deliver
33.1/40.020/20 Reviews9.6/10 Clients & Experience3.4/10 Market PresenceService focus
70% Social Media Marketing25% Facebook Advertising30% Other -
$10,000+$100 - $149 / hr250 - 999New York, NY
Ability to deliver
34.8/40.019.8/20 Reviews8.1/10 Clients & Experience6.9/10 Market PresenceService focus
15% Social Media Marketing20% Facebook Advertising85% Other -
$1,000+$100 - $149 / hr50 - 249Los Angeles, CA
Ability to deliver
36.6/40.020/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
10% Social Media Marketing25% Facebook Advertising90% Other -
$5,000+$150 - $199 / hr50 - 249Pleasant Grove, UT
Ability to deliver
36/40.020/20 Reviews10/10 Clients & Experience6/10 Market PresenceService focus
10% Social Media Marketing30% Facebook Advertising90% Other -
$10,000+$150 - $199 / hr10 - 49Northfield, IL
Ability to deliver
30.7/40.016.6/20 Reviews10/10 Clients & Experience4.1/10 Market PresenceService focus
70% Social Media Marketing50% Facebook Advertising30% Other -
$10,000+$150 - $199 / hr10 - 49Washington, DC
Ability to deliver
35.6/40.020/20 Reviews10/10 Clients & Experience5.6/10 Market PresenceService focus
10% Social Media Marketing40% Facebook Advertising90% Other -
$5,000+$100 - $149 / hr250 - 999San Diego, CA
Ability to deliver
32.2/40.016.2/20 Reviews10/10 Clients & Experience6/10 Market PresenceService focus
25% Social Media Marketing25% Facebook Advertising75% Other
Latest Facebook Advertising Articles
See all articles
The 2027 Creator Content Multiplier: Repurposing Influencer Campaigns Across Paid Ads, Search...
Turn one creator partnership into many assets. Learn how to repurpose influencer content across paid ads, search, email, and video in 2027 without losing...
Facebook Advertising Agency FAQs
Looking for a Facebook advertising agency but not sure where to start? We've put together answers to the most common questions businesses ask when searching for a trusted partner. This FAQ covers what you need to know before hiring a Facebook advertising agency, from pricing and services to results and red flags.
Clutch identifies and recognizes firms that drive ROI through targeted Facebook ad campaigns using a proprietary methodology. The top Facebook ad companies for 2026 include:
A Facebook ad marketing company plans, builds, and optimizes paid campaigns across Facebook, Instagram, Messenger, and the Meta Audience Network. These providers typically work on various aspects of the Facebook ad process, including the following:
- Market research
- Audience segmentation
- Creative production
- Budget allocation
- A/B testing
- Continuous performance monitoring
The goal is to lower cost-per-acquisition (CPA) and increase return on ad spend (ROAS) while keeping messaging consistent with your broader marketing strategy.
- Who will be my day-to-day strategist and what’s their experience?
- How do you structure campaigns for prospecting vs. retargeting?
- What is your creative testing framework and refresh frequency?
- How do you attribute conversions across devices and channels?
- What tech stack or tools do you use for reporting and optimization?
- Can you share ROAS benchmarks from similar businesses?
Partnering with specialists accelerates learning curves, provides access to premium creative talent, and frees your team to focus on product or sales. Agencies also leverage bulk media buying data to spot trends earlier and negotiate beta-program access with Meta.
- Guaranteed results or “secret” algorithms
- Lack of access to your ad account or data ownership
- One-size-fits-all creative with no testing roadmap
- Vague reporting or metrics that don’t map to revenue
- High employee turnover that disrupts account continuity
Finding the ideal Facebook ad marketing agency can be challenging, considering the variety of agencies you can partner with. Start your selection process by defining clear KPIs—ROAS, lead volume, or app installs to know what criteria to set. After that, you can follow these steps:
- Review case studies in your industry
- Check Clutch ratings and verified client feedback
- Compare pricing and service transparency (do they share media plans and real-time dashboards?)
- Evaluate communication cadence and project management tools
- Request a performance forecast based on historical data
Shortlist 3–5 agencies and ask for a strategic proposal before signing. Leverage Clutch’s directory, resources, and filters to guide your search.
According to data we’ve gathered here on Clutch, most agencies charge either:
Monthly retainer rates that average around $1,500 – $10,000 (ad spend excluded). Value or percentage-based pricing that usually ranges from 10%–20% of managed media spend.
Smaller projects (e.g., a one-time campaign audit) can start around $1,000, while enterprise-level engagements with dedicated creative teams may exceed $25,000 per month. Factors that influence price include campaign complexity, geographic targeting, creative volume, and the agency’s seniority.
Facebook ad marketing agencies generally provide the full range of services and solutions needed to execute compelling ad campaigns on Facebook. If you plan to hire a dedicated partner, you can expect to have access to services such as:
- Campaign strategy and goal setting
- Ad creative design (e.g., static, video, carousel, Reels)
- Pixel implementation and conversion tracking
- Audience building (e.g., look-alikes, retargeting, interest, demographic)
- Budget management and bid optimization
- Ongoing split testing and reporting dashboards
- Cross-channel integration with Google Ads, TikTok, or email marketing
Some full-service teams also handle landing-page design, funnel automation, and Shopify or WooCommerce integrations. Make sure to inquire about their expertise and additional services when discussing your project with a potential partner.
Agencies offer multidisciplinary teams—strategists, designers, copywriters, analysts—under one roof, ideal for scaling budgets and audiences. Freelancers can be cost-effective for smaller spends or single-channel experiments but may lack bandwidth for 24/7 optimization, advanced analytics, or rapid creative iteration.