Audio Visual Wall

Audio Visual Wall Market Outlook

The global Audio Visual Wall market is projected to reach approximately USD 20 billion by 2033, growing at a compound annual growth rate (CAGR) of around 15% from 2025 to 2033. This considerable growth is driven by the increasing demand for effective visual communication solutions across various sectors, including retail, corporate environments, and healthcare facilities. The proliferation of digital signage and the integration of advanced technologies such as OLED and LED are further propelling market expansion. As businesses seek to enhance customer engagement and streamline information dissemination, the adoption of audio-visual wall solutions is expected to surge. Additionally, the rising trend of remote work is encouraging organizations to invest in top-tier visual technologies that support collaboration and communication, thus fueling the market's growth.

Growth Factor of the Market

One of the primary growth factors for the Audio Visual Wall market is the ongoing technological advancements that enhance visual display quality and interactivity. Innovations in display technologies such as LED, LCD, and OLED are contributing to clearer, brighter, and more vibrant displays, which are essential for captivating audiences. Furthermore, the increasing emphasis on enhancing customer experience in retail environments through immersive visual displays is prompting businesses to invest in AV wall technology. The rapid growth of smart cities is also pushing the demand for signage solutions that can convey vital information quickly and effectively to the public. Moreover, the expansion of digital content creation and advertising is encouraging the use of AV walls for promotional campaigns, thereby expanding the market further. The versatility of audio-visual wall solutions across various applications, from corporate presentations to educational settings, makes them highly sought after, ultimately driving market growth.

Key Highlights of the Market

• The market is projected to grow at a CAGR of 15% from 2025 to 2033, reaching around USD 20 billion by 2033.
• Technological advancements in display technologies such as LED, OLED, and LCD are key growth drivers.
• Increasing demand for immersive experiences in retail and corporate sectors is boosting market expansion.
• Rising investment in smart city initiatives encourages the use of digital signage solutions.
• The versatility and adaptability of AV wall technologies make them suitable for various applications, enhancing their attractiveness.

By Product Type

Video Walls:

Video walls represent a significant segment of the Audio Visual Wall market, characterized by their ability to create large, immersive displays by combining multiple screens into a single, cohesive visual platform. These systems are widely used in environments such as control rooms, retail spaces, and large-scale events. The flexibility in configuration allows businesses to customize the size and shape of their video walls to suit specific needs. Additionally, advancements in technology have led to the development of ultra-thin bezels, which minimize the visual interruption between screens, creating a seamless display experience. As more organizations recognize the power of impactful visual storytelling, the demand for video walls is anticipated to continue its upward trajectory, providing businesses with enriched presentation capabilities.

Digital Signage:

Digital signage has emerged as a pivotal product type within the Audio Visual Wall market, serving as a powerful tool for communication and advertising. This segment includes displays that are used to convey information, promotions, and advertisements in real-time. The integration of content management systems allows for dynamic updates and targeted messaging, making digital signage a versatile solution for various industries. Retailers are increasingly utilizing digital signage to enhance customer engagement by providing interactive experiences and personalized promotions. The ability to capture and analyze viewer analytics further empowers businesses to refine their marketing strategies. As technology continues to advance, digital signage is expected to play an essential role in shaping customer interactions and driving sales.

Interactive Displays:

Interactive displays are revolutionizing the way information is shared and consumed, marking a significant trend in the Audio Visual Wall market. These displays enable user interaction, allowing audiences to engage actively with content rather than being mere observers. This engagement is particularly beneficial in educational settings, where interactive displays facilitate collaborative learning and participation. In corporate environments, they are utilized for brainstorming sessions, presentations, and training exercises, fostering an interactive atmosphere. The growing emphasis on experiential learning and user engagement across various sectors is anticipated to drive the demand for interactive displays, offering organizations innovative solutions to communicate and connect effectively.

Projectors:

Projectors remain a fundamental product type in the Audio Visual Wall market, known for their versatility and ability to project large images in diverse settings. They are particularly favored in applications such as presentations, exhibitions, and educational environments where space may be limited. Modern projectors come equipped with high-definition capabilities, ensuring superior image quality that is crucial for effective communication. Additionally, advancements in laser technology have enhanced brightness and durability, making projectors a viable option for both indoor and outdoor applications. Despite the rise of flat-panel displays, the affordability and flexibility of projectors continue to make them a preferred choice for many organizations looking to create impactful visual experiences.

Displays:

Displays, encompassing a wide range of technologies such as LCD and LED panels, form another critical segment of the Audio Visual Wall market. They are extensively used in various applications, including retail, corporate, and public information systems. The growing preference for high-resolution displays with improved color accuracy and brightness is attracting significant interest from consumers. Furthermore, as technologies evolve, displays are becoming thinner, lighter, and more energy-efficient, leading to increased adoption in different settings. Integrating these displays into comprehensive audio-visual setups enhances their appeal, as businesses seek to create holistic visual experiences that captivate their audiences.

By Application

Retail:

In the retail sector, audio-visual wall solutions play a crucial role in enhancing customer engagement and driving sales. Retailers use audio-visual walls to display promotions, advertisements, and product information in dynamic formats that attract customer attention. The ability to showcase high-resolution images and videos effectively transforms the shopping experience, creating immersive environments that encourage longer dwell times. Moreover, interactive displays enable customers to engage with products directly, facilitating informed purchasing decisions. As retail competition intensifies, businesses are increasingly investing in advanced audio-visual technologies to create unique shopping experiences and differentiate themselves from competitors.

Corporate:

In corporate environments, audio-visual walls serve as essential tools for communication, collaboration, and presentations. These solutions enable organizations to convey complex information clearly and effectively, supporting meetings, training sessions, and company-wide announcements. The implementation of video walls and interactive displays enhances teamwork by allowing multiple participants to share and interact with content simultaneously. As remote work becomes more prevalent, companies are leveraging audio-visual technology to maintain connectivity and collaboration among distributed teams. The demand for high-quality visual displays that facilitate engaging presentations and enhance corporate communication continues to drive the growth of the audio-visual wall market in this segment.

Healthcare:

The healthcare industry is witnessing significant advancements through the adoption of audio-visual wall technologies. Hospitals and clinics utilize these solutions for patient information displays, medical training, and enhancing patient engagement. Interactive displays can provide educational content to patients and their families, helping them understand medical procedures and treatment options. Additionally, video walls are employed in control centers for monitoring and diagnostics, ensuring that medical professionals have access to real-time information. As healthcare organizations increasingly prioritize patient experience, the integration of audio-visual solutions is expected to expand, driving growth in this application segment.

Education:

In the education sector, audio-visual walls are revolutionizing traditional teaching methods by promoting interactive learning experiences. Educational institutions are integrating these technologies into classrooms, auditoriums, and training facilities to enhance student engagement and comprehension. Interactive displays enable teachers to present lessons dynamically while fostering collaboration among students. Furthermore, the ability to connect multiple devices facilitates seamless communication and knowledge sharing in both in-person and remote learning environments. The increasing focus on innovative teaching approaches and technology integration in education is propelling the demand for audio-visual wall solutions in this sector.

Government:

Government applications for audio-visual walls encompass various uses, including public information displays, emergency management communication, and inter-agency collaboration. These technologies allow government agencies to disseminate information efficiently to the public, particularly during emergencies or critical announcements. Video walls are increasingly deployed in control rooms to monitor public safety and security, ensuring timely responses to incidents. Additionally, government offices are utilizing audio-visual solutions to enhance communication and collaboration among departments, improving overall operational efficiency. The demand for effective communication channels within government institutions is anticipated to drive growth in this application area.

By Distribution Channel

Online Stores:

Online stores have become a significant distribution channel for audio-visual wall products, providing consumers with a convenient platform to browse and purchase various solutions. The growth of e-commerce has transformed the way businesses and individuals acquire technology, as online marketplaces offer a wide range of options and competitive pricing. Furthermore, online stores often provide valuable customer reviews and product comparisons, aiding buyers in making informed decisions. As consumers increasingly prefer the convenience of online shopping, this distribution channel is expected to continue expanding its influence in the audio-visual wall market.

AV Integrators:

Audio-visual integrators are specialized companies that design and implement audio-visual solutions tailored to specific client needs. They play a crucial role in the distribution channel by providing expert advice, installation services, and ongoing support for audio-visual wall systems. These integrators are skilled at assessing the unique requirements of various applications, ensuring that the audio-visual solutions they provide are optimized for performance and functionality. As organizations seek to enhance their visual communication capabilities, the demand for AV integrators is anticipated to grow, solidifying their position in the distribution landscape.

Direct Sales:

Direct sales, wherein manufacturers market their products directly to end-users, is another essential distribution channel in the audio-visual wall market. This approach allows manufacturers to engage closely with customers, understand their specific requirements, and offer tailored solutions. By eliminating intermediaries, direct sales can also enhance cost-effectiveness for buyers, making advanced audio-visual technologies more accessible. As businesses increasingly prioritize personalized service and tailored solutions, the direct sales model is expected to gain traction, supporting the overall growth of the audio-visual wall market.

Rental Companies:

Rental companies specializing in audio-visual equipment play a vital role in providing businesses with temporary access to advanced technologies for events, presentations, or exhibitions. This distribution channel is particularly advantageous for organizations that may not require permanent installations or who operate under budget constraints. Renting audio-visual walls allows companies to leverage cutting-edge technology without the significant capital investment, making it an attractive option for trade shows, corporate events, and live performances. The trend of experiential marketing and event-driven engagement is likely to drive demand for rental audio-visual solutions, reinforcing the importance of this distribution channel.

System Integrators:

System integrators are key players in the audio-visual wall market, as they specialize in combining various technology components to create comprehensive solutions that meet specific requirements. These companies possess the expertise needed to design, install, and maintain complex audio-visual systems, ensuring optimal performance and user satisfaction. System integrators work across multiple sectors, including corporate, education, and events, adapting their solutions to fit the unique demands of each application. As organizations seek integrated audio-visual solutions that enhance their operational efficiency, the role of system integrators is expected to become increasingly vital in the market.

By Technology

LED:

LED technology has revolutionized the audio-visual wall market, offering bright, vibrant displays that are energy-efficient and have a long lifespan. LED walls are particularly favored for their versatility, as they can be used in a variety of applications, from retail environments to large-scale events. This technology enables seamless integration into various settings, allowing for flexible configurations and scalable installations. Furthermore, advancements in LED technology, such as fine-pitch displays, have enhanced image quality and resolution, making them increasingly suitable for high-definition applications. As demand for high-quality visual experiences continues to grow, LED technology is expected to remain a dominant force in the audio-visual wall market.

LCD:

LCD technology constitutes a significant segment of the audio-visual wall market, renowned for its clarity and color accuracy. LCD displays are commonly used in control rooms, corporate environments, and retail settings due to their reliable performance and affordability. This technology allows for large screen sizes to be achieved through the use of multiple panels, making it an effective solution for creating visually striking displays. Additionally, advancements in LCD technology, including improvements in contrast ratio and response time, have enhanced the overall viewing experience. As organizations continue to seek cost-effective yet high-quality visual solutions, LCD technology is expected to maintain its relevance in the market.

Projection:

Projection technology remains a vital component within the audio-visual wall market, particularly for applications requiring large image displays in limited spaces. Projectors are popular in educational institutions, corporate environments, and event settings, where the ability to project large visuals can enhance presentations and experiences. The advancements in laser projection technology have improved brightness and image quality, allowing for effective use in various lighting conditions. Additionally, the adaptability of projectors in terms of installation and configuration options contributes to their ongoing demand. As organizations recognize the benefits of utilizing projection technology, its significance within the audio-visual wall market is anticipated to remain strong.

OLED:

OLED technology is gaining traction within the audio-visual wall market due to its exceptional picture quality, deep blacks, and vibrant colors. OLED displays are thinner and lighter than traditional LCDs, allowing for sleek designs that are especially appealing in high-end retail and corporate environments. This technology provides an immersive viewing experience with superior contrast ratios, making it ideal for applications that require high-quality visuals. As more businesses seek to create striking visual displays that capture audience attention, the adoption of OLED technology is expected to rise significantly in the coming years, contributing to overall market growth.

Direct View LED:

Direct View LED technology is a notable innovation in the audio-visual wall market, characterized by its ability to create large-scale displays using individual LEDs. This technology offers significant advantages, including high brightness levels, enhanced durability, and minimal bezels, resulting in seamless images. Direct View LED is increasingly being adopted for outdoor displays due to its resilience against weather conditions and sunlight, making it a preferred choice for advertising and public information systems. As organizations look to leverage high-impact visuals for marketing and engagement, the demand for Direct View LED solutions is expected to escalate, solidifying its position in the market.

By Region

The North American region currently holds the largest share of the Audio Visual Wall market, driven largely by the presence of advanced technological infrastructure and a growing emphasis on innovative marketing strategies among businesses. The region's market is projected to grow at a CAGR of approximately 14% from 2025 to 2033, as organizations increasingly invest in audio-visual solutions to enhance communication and customer engagement. The corporate sector in North America is particularly focused on adopting audio-visual technologies to support remote work, collaboration, and presentation needs. As such, the demand for various product types, including video walls and interactive displays, continues to rise.

In Europe, the Audio Visual Wall market is also experiencing significant growth, fueled by increasing investment in digital signage and advancements in display technologies. The region has a strong focus on enhancing customer experiences through immersive and interactive audio-visual solutions across retail, corporate, and educational applications. The UK, Germany, and France are among the leading countries in terms of market adoption, showcasing a trend toward innovative audio-visual technologies in various sectors. The projected growth rate for Europe is around 12% CAGR during the forecast period, reflecting the expanding demand for effective communication solutions.

Opportunities

The expanding adoption of smart city initiatives presents a significant opportunity for the Audio Visual Wall market. As cities increasingly invest in technology for public information dissemination, audio-visual walls can serve as critical tools for conveying real-time updates, traffic conditions, and emergency alerts. The integration of these solutions into urban infrastructure can help enhance public engagement and improve overall communication efficiency. Additionally, the growing trend of experiential marketing among brands is driving demand for innovative audio-visual displays that captivate audiences and create memorable experiences. This evolution in customer interaction provides a fertile ground for audio-visual wall technologies to flourish, as businesses seek to leverage high-impact visuals to communicate effectively with their target audience.

Moreover, the continual advancements in technology present a myriad of opportunities for market players. The evolution of display technologies, such as high-definition OLED and 4K resolution displays, is set to redefine the capabilities of audio-visual walls, allowing for even more immersive experiences. Businesses that invest in research and development to create cutting-edge products stand to gain a competitive advantage in the market. Additionally, the rising trend of virtual and augmented reality applications in various sectors, including education and entertainment, opens further avenues for integrating audio-visual wall solutions, thus expanding their applicability and market reach.

Threats

Despite the promising growth prospects in the Audio Visual Wall market, several threats could hinder progress. One significant concern is the rapid pace of technological advancement, which can lead to product obsolescence. Manufacturers face pressure to continually innovate to meet changing consumer preferences and stay competitive. Failure to keep up with advancements can result in reduced market share for companies that do not adapt quickly. Additionally, the increasing prevalence of DIY solutions and cost-effective alternatives may deter potential buyers from investing in high-end audio-visual wall systems, impacting market growth.

Another challenge stems from economic fluctuations and budget constraints faced by organizations across various sectors. During economic downturns, companies may prioritize essential expenditures, potentially delaying investments in audio-visual technologies. This restriction can adversely affect the overall market demand, especially in sectors like education and healthcare that rely on strict budgeting. As such, market players must remain vigilant in navigating these economic challenges while devising strategies to address customer needs effectively.

Competitor Outlook

• Samsung Electronics
• LG Electronics
• Sharp Corporation
• NEC Display Solutions
• Barco
• Pioneer
• Panasonic Corporation
• Christie Digital Systems
• BenQ Corporation
• ViewSonic Corporation
• Sony Corporation
• QSC Audio Products
• Crestron Electronics
• Extron Electronics
• Blackmagic Design

The competitive landscape of the Audio Visual Wall market is characterized by the presence of several established players and emerging companies vying for market share. Leading manufacturers such as Samsung and LG dominate due to their innovative product offerings and extensive market reach. These companies invest significantly in research and development to create cutting-edge technologies that enhance audio-visual experiences. Additionally, their strong brand recognition and customer loyalty play a crucial role in maintaining their competitive edge. The continuous evolution of product lines, including high-resolution displays and interactive solutions, underscores their commitment to meeting the diverse needs of consumers across various sectors.

Emerging players are also making strides in the Audio Visual Wall market by focusing on niche segments and offering tailored solutions. Companies like ViewSonic and BenQ are gaining traction by providing cost-effective alternatives to traditional audio-visual systems, appealing to budget-conscious consumers and organizations. These companies prioritize customer service and support, ensuring that clients receive the necessary assistance during the installation and maintenance of audio-visual solutions. By leveraging innovative marketing strategies, such as experiential demonstrations and targeted promotions, these emerging players are carving out a foothold in the competitive landscape.

Furthermore, strategic partnerships and collaborations are becoming increasingly common in the Audio Visual Wall market, as companies seek to enhance their capabilities and expand their reach. Collaborations between technology firms, AV integrators, and content creators enable the development of comprehensive solutions that cater to specific industry needs. For instance, partnerships focused on integrating interactive technologies into educational institutions are gaining momentum, driving demand for innovative audio-visual wall solutions. As the market continues to evolve, companies that embrace collaboration and innovation are likely to thrive in this competitive environment.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 Barco
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 Pioneer
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 LG Electronics
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 BenQ Corporation
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Sony Corporation
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Blackmagic Design
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Sharp Corporation
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Extron Electronics
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 QSC Audio Products
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Samsung Electronics
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Crestron Electronics
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 NEC Display Solutions
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Panasonic Corporation
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 ViewSonic Corporation
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Christie Digital Systems
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Audio Visual Wall Market, By Application
    • 6.1.1 Retail
    • 6.1.2 Corporate
    • 6.1.3 Healthcare
    • 6.1.4 Education
    • 6.1.5 Government
  • 6.2 Audio Visual Wall Market, By Product Type
    • 6.2.1 Video Walls
    • 6.2.2 Digital Signage
    • 6.2.3 Interactive Displays
    • 6.2.4 Projectors
    • 6.2.5 Displays
  • 6.3 Audio Visual Wall Market, By Distribution Channel
    • 6.3.1 Online Stores
    • 6.3.2 AV Integrators
    • 6.3.3 Direct Sales
    • 6.3.4 Rental Companies
    • 6.3.5 System Integrators

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Audio Visual Wall Market by Region
  • 10.6 Middle East & Africa - Market Analysis
    • 10.6.1 By Country
      • 10.6.1.1 Middle East
      • 10.6.1.2 Africa

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Audio Visual Wall market is categorized based on

By Product Type

• Video Walls
• Digital Signage
• Interactive Displays
• Projectors
• Displays

By Application

• Retail
• Corporate
• Healthcare
• Education
• Government

By Distribution Channel

• Online Stores
• AV Integrators
• Direct Sales
• Rental Companies
• System Integrators

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Samsung Electronics
• LG Electronics
• Sharp Corporation
• NEC Display Solutions
• Barco
• Pioneer
• Panasonic Corporation
• Christie Digital Systems
• BenQ Corporation
• ViewSonic Corporation
• Sony Corporation
• QSC Audio Products
• Crestron Electronics
• Extron Electronics
• Blackmagic Design