We ranked the leading B2C marketing agencies to work with complete with their portfolios, reviews, awards, hourly rates, team size and more. Use our practical filters to personalize your search and select the best agency that can serve your needs accordingly.

Best B2C Marketing Companies

824 Companies - Rankings updated: August 19, 2026

All listed digital marketing agencies on DesignRush are assessed for industry expertise and customer testimonials to provide you with a vetted selection. Certain placements may be paid.

B2C
Corporate Services
All Client Types
Sort by: Sponsored

  • Jayshinde

    Software, Web Development, Digital Marketing, AI Automation & AI SEO Agency in Pune India

    India's Best AI Digital Marketing Company in Pune, India, Provides Exceptional Growth Services With AI Automation, AI Software, AI Web App Solutions, AI Digital Marketing and AI SEO Services in Pune, India and Globally...

    Location
    Pune, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • Adeptd

    Making a mark in the digital space

    We specialize in transforming and enhancing existing online business models, as well as constructing comprehensive online ecosystems for startups, mid-size companies, and large brands. Our services are designed to help clients adapt to the ever-evolving digital landscape and achieve sustainable growth...

    Location
    Udaipur, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $22/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    3 Projects Listed
    Visit Website View Profile

  • DigitalPro World Enterprises

    Renting the contemporary era to gain the effects that our clients desire.

    DigitalPro World Enterprises is one of the leading digital marketing agencies in Chennai, providing unique and innovative marketing services for brands...

    Location
    Chennai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    4.4 4.4 (13)

  • Adsmagnify

    Best Digital Marketing Agency In Borivali.

    For businesses in Borivali seeking top-notch digital marketing services, adsmagnify.com is a standout choice. With expertise in SEO, PPC, social media, content, and web design, they deliver results. Transparent, strategic, and client-focused, adsmagnify.com is committed to your success in the digital...

    Location
    Mumbai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    4.6 4.6 (73)

  • PIXELS TRAIL

    Creative Designing, Corporate Branding & Digital Marketing Solutions

    PIXELS TRAIL, headquartered in Delhi, India, is a prominent digital marketing agency offering a range of services including corporate branding, graphic design, website development, SEO, and social media marketing. With a focus on innovation and strategic solutions, we help businesses achieve their digital...

    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile
    5.0 5.0 (1)

  • Nivara

    We’re The Future Of E-Commerce Help!

    We're The Future Of eCommerce Help! Whether youre starting small or scaling up, we provide strategy, design, and growth services to maximize your eCommerce...

    Location
    Mohali, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    5 Projects Listed
    Visit Website View Profile
    4.5 4.5 (16)

  • Salactsol

    Get your online presence in Under an Hour.

    Salactsol is a top rated software development company providing web, graphics, development and marketing solutions to almost all over the world...

    Location
    Karachi, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $90/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    3 Projects Listed
    Visit Website View Profile
    4.0 4.0 (1)

  • Ambest Brand Communication Agency

    Your Digital & Video Marketing Launchpad

    Ambest Brandcom is a leading Corporate Film Video Maker in Mumbai and a full-service Video Production Agency in Mumbai, offering end-to-end video production services for brands, corporates, and growing businesses...

    Location
    Mumbai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Visit Website View Profile

  • RedCross Digital

    Grow your business With Our SEO Services.

    Welcome to RedCross Digital, where we blend innovation with expertise to craft captivating digital experiences. From bespoke web development to strategic digital marketing and precision-targeted PPC campaigns, we're your trusted partner in navigating the digital landscape. Let's elevate your online presence...

    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $6/hr
    Visit Website View Profile
    5.0 5.0 (88)

  • Intentful Media

    Sharp SEO + Effective Content = Own Organic Search

    Intentful Media delivers SEO outcomes supported by data and focused attention. Our team conducts a comprehensive evaluation of your business, taking into account its distinct characteristics, requirements, as well as industry competition and challenges. We craft tailored recommendations and offer continuous...

    Location
    Ahmedabad, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.3 4.3 (1)

  • Santric Technologies Pvt Ltd.

    Where Innovation Meets Creativity.

    Santric Technologies delivers innovative, tailored software solutions across healthcare, finance, and e-commerce. With in-house, offshore, and onsite expertise, we drive efficiency, ROI, and sustainable growth where innovation meets creativity...

    Location
    Bengaluru, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    3 Projects Listed
    Visit Website View Profile

  • Shape My Content

    On-demand content writing services for small to medium-sized companies

    Shape My Content is a dedicated content writing agency committed to creating engaging, contextual, and high-performing content for small and midsized businesses. We offer SEO content writing, editing, SMM caption creation, and many other services to help brands establish a credible online presence...

    Location
    Indore, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.3 4.3 (1)

  • Carney Technologies Services

    Our Business Is To Grow Your Business

    Carney Technologies Services is a premier digital marketing and IT Services Provider agency in Kolkata, India, specializing in website design and development, search engine optimization (SEO), Google Ads, Facebook / Instagram Ads, Content Creation, Email marketing, LinkedIn Ads, and social media marketing...

    Location
    Kolkata, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.6 4.6 (61)

  • Cybage

    Delivering Value Scientifically

    Cybage is an information technology company specializing in outsourced product engineering and IT consulting services. With over three decades of experience, we are a leader in software development, partnering with some of the world's largest independent software vendors (ISVs) and enterprises. Our team of...

    Location
    Pune, India
    Number of Employees
    1000 & Up
    Visit Website View Profile
    4.5 4.5 (2050)

  • Turain Software Pvt. Ltd.

    IT Solutions and Digital Marketing Company

    Turain Software offers Bulk SMS & WhatsApp Business API services with advanced features. With offices in Kolkata & Bangalore, we specialize in digital marketing, SEO, and video optimization, delivering scalable solutions to boost business growth...

    Location
    Kolkata, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    4.9 4.9 (139)

  • Digital eBrandz

    Marketing Without Boundaries

    Digital eBrandz is a full-service digital marketing agency that helps businesses grow through data-driven SEO, paid advertising, social media marketing, and web development solutions. The agency combines strategic marketing, analytics, and technology to improve online visibility, generate qualified leads, and...

    Location
    Noida, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed
    Visit Website View Profile
    4.8 4.8 (9)

  • Tech Gosh

    With Tech Gosh You're the Boss!

    Techgosh is a digital marketing and web design agency specializing in website development and SEO. We also offer social media marketing, PPC, video editing, influencer marketing, and more delivering tailored strategies to help businesses grow online...

    Location
    Greater Noida, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    3 Projects Listed
    Visit Website View Profile
    5.0 5.0 (4)

  • Mindgrap Technologies

    We develop big ideas that sell.

    Mindgrap Technologies empowers you to unleash your creativity and productivity with our innovative mind-mapping tool, allowing you to organize ideas effortlessly. Our solutions are designed to enhance your efficiency, ensuring that you can achieve your goals with ease and precision...

    Location
    Mohali, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
    Visit Website View Profile
    4.4 4.4 (14)

  • A99 Solutions

    Believe, Begin, Become.

    Our competent expertise is proficient in not just scaling your business, but in giving a face to it. Leaving a digital footprint on your visitors' minds...

    Location
    Lahore, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
    Visit Website View Profile

  • Ninepings Digital

    Blueprint to infinite possibilities

    At Ninepings we are experienced Marketing professionals. We focus on managing the Marketing Operations for our clients which includes Planning, Strategy, Analytics, Digital Marketing, Event Management, Content Strategy...

    Location
    Bengaluru, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • RIOT Ecommerce Solutions

    Happy Customers, Successful Companies.

    RIOT Ecommerce is a full-service outsourcing agency that provides a pool of talented and experienced professionals with skills in Customer service/support, Data entry, Administrative support, and Virtual assistance...

    Location
    Gurgaon, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $12/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    5.0 5.0 (20)

  • KamnaTechno (P) Ltd.

    Innovating Ideas, Empowering Growth.

    KamnaTechno (P) Ltd. is a leading IT and digital marketing company based in Noida, Uttar Pradesh. With 15+ years of expertise, we provide end-to-end solutions including website and app development, e-commerce platforms, SEO, social media marketing, Google Ads, branding, and outdoor promotions. Our team...

    Location
    Noida, India
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • BayBytes

    Empowering Businesses with Smart Digital Solutions.

    BayBytes is a results-driven digital agency offering tailored website design, digital marketing, branding, and business automation solutions. We help businesses grow with custom, user-centered strategies and seamless, responsive design...

    Location
    Visakhapatnam, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • Unibask Technologies

    You Dream We Design.

    Unibask Technologies Private Limited develops revolutionary, data-driven, and performance-focused strategies for your brand. Our innovative approach ensures optimal results and enhances your brand's impact...

    Location
    Kolkata, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.8 4.8 (38)

  • Bright Design Studio

    Creative Solutions For Exceptional Brands

    Bright Design Studio, #14 Award Winning Brand Studio, crafts bold, modern brands and websites that captivate audiences, elevate credibility, and drive growth turning your vision into striking digital experiences that stand out since July 2020...

    Location
    Shanghai, China
    Number of Employees
    Under 49
    Average Hourly Rate
    $180/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile

  • Codeingil

    No. 1 Web Design & Development Company in Thiruvallur.

    Codeingil, is an startup web design and development company in Thiruvallur. Offering web designing in very affordable price in AVADI. We also provide ecommerce system & Customer Relationship Management System (CRMS)...

    Location
    Tiruvallur, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $55/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile
    5.0 5.0 (3)

  • Dextrous Info Solutions

    Taking Information Technology To The Next Level

    Dextrous Infosolutions is a major Indian corporation with the primary goal of providing the best services to promote the overall growth of our clients' businesses. We deliver cheap solutions that assure corporate success with over a decade of industry expertise, unrivaled technological talents, and unique...

    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $12/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile

  • NextAstra Technologies

    Unlocking Business With AI Insights

    NextAstra Technologies Pvt. Ltd. is an enterprise AI and automation partner helping mid-market and large organizations build practical, scalable, ROI-driven solutions. We specialize in Generative AI, ML, NLP, Computer Vision, Predictive Analytics, and Intelligent Document Processing...

    Location
    Pune, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
    Visit Website View Profile
    4.5 4.5 (8)

  • Heylin Spark Private Limited

    Were Sharp Brands Creators

    Growing your business in this digital world is essential nowadays. If you want to be successful in business, you can hire the top-oriented services of Heylin Spark. We are a leading firm in the PR, media relations, reputation management, digital marketing, investor relations, strategic, policy research and...

    Location
    Noida, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.9 4.9 (118)

  • Eminenture Technologies

    Innovation Driven Transformation

    Eminenture Technologies is one of the topmost NASSCOM-certified tech companies from India that have been making moving ahead of the curve through web business easier than ever...

    Location
    Delhi, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $75/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    3.8 3.8 (119)

  • Top SEO Expertz

    Your Partner in Digital Domination!

    Top SEO Expertz is a leading digital marketing agency in UK, revolutionizing the boosting parameters for online businesses. All those digital marketing services that you need are just a click away from us!...

    Location
    Karachi, Pakistan
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
    Visit Website View Profile

  • Samyak Online

    Digital Marketing and Website Development Agency

    As a leading SEO Agency in India, our commitment lies in delivering top-tier yet affordable SEO services that drive revenue. With seasoned experts well-versed in diverse business demographics, we cater to businesses of all sizes and niches, offering cost-effective SEO solutions tailored for small businesses...

    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Visit Website View Profile
    4.9 4.9 (40)

  • SEO Champs

    Leading SEO Company In Pakistan.

    Since 2019, we've been delivering top-notch SEO services in Pakistan, helping businesses thrive online. Our expert team offers tailored SEO packages in Pakistan, ensuring maximum visibility and ROI...

    Location
    Karachi, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    5.0 5.0 (2)

  • Hawkium

    Where Technology Meets Business Success.

    Hawkium is a top digital marketing agency offering expert services in SEO, social media marketing, and performance marketing. Based in India, we provide SEO services in Ahmedabad and nationwide, with customized strategies to boost your online presence. Our team specializes in eCommerce SEO services, helping...

    Location
    Ahmedabad, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Visit Website View Profile
    5.0 5.0 (8)

  • D-Axis Digiweb Solutions LLP

    We're on a Mission to Change Your View of SEO.

    D-Axis Digiweb is the premier agency that renders digital marketing services, website development, SEO, SMM, Email Marketing, Graphic Designing, and Content Marketing...

    Location
    New Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    4.4 4.4 (93)

  • ASK Digital Agency

    Where Creativity Meets Conversion

    At ASK Digital Agency, we blend bold creativity with smart digital strategies to drive real business results. From eye-catching designs to performance-driven marketing campaigns, we help brands grow, engage, and convert. Whether you're building your online presence from scratch or scaling your digital reach...

    Location
    Gurgaon, India
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile
    4.8 4.8 (36)

  • Evolviq Digital

    Expect Execute Evolve Excel

    Evolviq Digital is a growth-focused digital agency helping businesses build modern brand presence through strategic web development, performance marketing, and digital transformation solutions. We create measurable results by combining smart design, technology, and data-driven strategies that attract...

    Location
    Karachi, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    5.0 5.0 (2)

  • Bluestream Software Solutions

    Your design and tech partners

    Bluestream provides design and development solutions using latest technologies. We support you through your journey from inception to release working in an agile approach. We provide UX/UI, iOS and Android, Web applications and Dev Ops services. We also support your digital marketing journey...

    Location
    Goa, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • StepUp DigiWorld

    Expert B2B Digital Marketing Team

    We can help your company by providing effective and creative solutions for your marketing strategy...

    Location
    Delhi, India
    Number of Employees
    Under 49
    Visit Website View Profile

  • Ezio Solutions

    Your End-to-End IT Solutions Partner

    Ezio Solutions is a performance-focused digital marketing and technology agency helping brands generate measurable growth. We specialize in Google Ads, SEO, social media marketing, web development, and custom web applications designed to drive qualified leads and revenue...

    Location
    Coimbatore, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Portfolios Count
    1 Project Listed
    Visit Website View Profile
    4.7 4.7 (90)

  • Codistan Ventures

    You Dream, We Code

    Codistan is a global technology and digital services company helping startups and businesses build, launch, and scale digital products. We specialize in MVP development, custom software solutions, AI-powered applications, web and mobile development, and performance-driven digital marketing. By combining...

    Location
    Islamabad, Pakistan
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.7 4.7 (128)

  • DigiDNA

    Advance Your Digital Journey With DigiDNA.

    DigiDNA specializes in driving exceptional results for businesses. At DigiDNA, we are confident in our ability to assist you in improving your internet presence, hence generating more business opportunities for your industry...

    Location
    Pune, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $29/hr
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • Ocean Digitech Pvt Ltd.

    Clicks to Conversions

    Custom website design and results-driven digital marketing built to boost online growth and conversions for modern businesses...

    Location
    Noida, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile

  • Dianify

    From Connecting Users To Converting Them Into Trust

    Dianify specializes in cross-border e-commerce and independent store development, offering professional website design, development, and end-to-end e-commerce solutions to help brands launch and grow globally...

    Location
    Hangzhou, China
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile

  • Scientific Webs

    Top Web Design and Development Company India.

    At Scientific Webs, we utilize cutting-edge frameworks and languages for CMS, ERP, software, and website development, with expertise in Flutter for iOS and Android app development. Having successfully completed over 248 projects on Freelancer.com with a 4.9 out of 5-star rating, we offer infinite iterations...

    Location
    Jaipur, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Visit Website View Profile
    3.7 3.7 (35)

  • Deftsoft

    Programming ideas.

    Deftsoft is a premier IT service provider since 2005. We cater to a broad spectrum of enterprises and business organizations to yield revenue-centric results. Our expertise includes AEM development, Blockchain and Metaverse development, mobile and web app development, and digital marketing services...

    Location
    Mohali, India
    Number of Employees
    250 - 499
    Average Hourly Rate
    $20/hr
    Visit Website View Profile
    4.2 4.2 (718)

  • ParaliyaTech Solutions

    We Build Brands For A Digital World!

    ParaliyaTech Solutions is a leading IT software development company specializing in creating innovative, scalable, and customized digital solutions. We empower businesses with cutting-edge technology, offering services in web development, mobile apps, e-commerce, and custom software solutions. Our mission is...

    Location
    Ahmedabad, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Visit Website View Profile
    5.0 5.0 (3)

  • Vortex Byte Digital

    Where Digital Empires Rise.

    A professional Digital Marketing Agency with a dedicated focus on Pay-Per-Click (PPC) campaigns and website optimization. We excel at catalyzing Digital Success by crafting Compelling Content, Striking Visuals, and Interactive Interfaces, resulting in an unmatched level of Engagement and Growth...

    Location
    Islamabad, Pakistan
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    5.0 5.0 (4)

  • The SMM Hub

    Top Digital Marketing Agency in Mumbai

    TSH.Media is a performance-driven digital marketing agency specializing in Meta Ads, Google Ads, SEO, and creative strategy. We help brands scale through data-backed campaigns, lead generation, and ROI-focused digital growth solutions...

    Location
    Mumbai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile
    4.8 4.8 (51)

  • Innoventure Fintech

    Soar Above the Competition with Digital Marketing Solutions!

    At Innoventure Fintech, we offer top-tier digital marketing exposure to businesses of all sizes. We firmly believe that every business deserves a chance to thrive...

    Location
    Noida, India
    Number of Employees
    Under 49
    Visit Website View Profile
    5.0 5.0 (23)

Explore Digital Marketing Specializations

Explore all Digital Marketing Agencies

Popular Services

Latest Trends Related to B2C Marketing

Why AI-Driven Healthcare Marketing Starts with Better Data
Digital Marketing

Why AI-Driven Healthcare Marketing Starts With Better Data

276
behavior based email triggers
Digital Marketing

Behavioral Email Triggers: The Highest-ROI Automation Strategy in 2026

737
Digital Marketing

10 HubSpot Alternatives That Make More Sense for Startups in 2026

913

Receive Free Proposals

For your project

1

Specify your budget, timeline and project requirements

2

Our experts curate a list of up to 5 most qualified candidate agencies

3

We connect you with them so you can choose the most suitable partner

Specify your requirements