Top Digital Design Agencies
-
Featured
What are Featured Providers?
$75,000+$150 - $199 / hr10 - 49Chicago, ILServices provided
See all 41 projectsSolid Digital is a digital agency specializing in web design, development, and branding solutions. Their clients commend them for exceptional project management, with 100% of the reviews highlighting their ability to deliver projects on time, often ahead of schedule, and within budget. Approximately 86% of reviewers praise their responsiveness, structured workflows, and collaborative approach, which contribute to a high level of client satisfaction. Overall, Solid Digital's ability to translate client objectives into successful digital transformations is consistently recognized across their reviews.
-
$1,000+$100 - $149 / hr2 - 9Azusa, CA
Services provided
Web design agency OneVector Design Co is in Azusa, California. The team offers Web Design and Graphic Design.
Read more -
$5,000+$25 - $49 / hr2 - 9
Services provided
See all 5 projectsWebAppetize Technologies is a versatile development company specializing in web and application development, including React, Python, and Flutter. The company consistently receives positive feedback, with 100% of reviewers praising their professionalism, technical expertise, and quality deliverables. Notable themes include effective project management and proactive problem-solving, though minor initial communication issues were noted by one reviewer.
-
$1,000+< $25 / hr10 - 49
Services provided
Hire Web Design Agency is an Indianapolis, Indiana-based web design agency. They specialize in Web Design and Logo and were launched in 2011.
Read more -
$1,000+$25 - $49 / hr2 - 9
Services provided
See all 1 projectsExplicit Consults Marketing is a Houston digital marketing agency that helps small businesses thrive online by providing customized strategies to get them more calls, leads, clients, organic
Read more -
$5,000+$100 - $149 / hr2 - 9Dublin, OH
Services provided
Greenline Creative is a small web design agency established in 2008. Their services include Web Design and Web Development.
Read more -
$1,000+< $25 / hr50 - 249
Services provided
Custom Logo Design USA is a graphic design company and Logo company. Based in Irvine, California, the team offers Graphic Design and Logo.
Read more -
$1,000+Undisclosed250 - 999Gurugram, India
Services provided
Custom software development firm Locus Rags is based in Gurugram, India. Their services include Custom Software Development and Graphic Design.
Read more -
$1,000+$50 - $99 / hr250 - 999Gurugram, India
Services provided
Oodles Studio is an user experience agency. They are based in Gurugram, India and have midsize team. Their services include UX/UI Design and Logo.
Read more -
$1,000+< $25 / hr250 - 999Bengaluru, India
Services provided
Graphic design company Zvky design Studio was launched in 2009. The midsize team focuses on Graphic Design and UX/UI Design.
Read more -
$5,000+$25 - $49 / hr250 - 999West Palm Beach, FL
Services provided
Designster is a West Palm Beach, Florida-based graphic design agency. Their services include Graphic Design and Logo.
Read more -
$1,000+$100 - $149 / hr10 - 49Gurugram, India
Services provided
Founded in 2015, bizzeonline is a small web design company and UX agency. Their services include Web Design and UX/UI Design.
Read more -
$5,000+$100 - $149 / hr50 - 249
Services provided
Converge Design is an UX company and graphic design company located in Gainesville, Georgia. They offer UX/UI Design and Graphic Design.
Read more -
UndisclosedUndisclosed250 - 999
Services provided
Octo web studios is a web design company. The team is in Helena, Montana, and their services include Web Design and UX/UI Design.
Read more -
$1,000+$25 - $49 / hr10 - 49Sugar Land, TX
Services provided
Website360 is a web design company founded in 1998. The small team provides Web Design and Graphic Design.
Read more -
$1,000+$25 - $49 / hr1,000 - 9,999
Services provided
Overnight Graphics is a graphic design company. They were established in 2004, and their services include Graphic Design and Web Design.
Read more -
UndisclosedUndisclosed10 - 49
Services provided
Machine Embroidery Designs is a graphic design company and Logo company founded in 2015. Their team offers Graphic Design and Logo.
Read more -
$10,000+$150 - $199 / hr2 - 9
Services provided
Regent Park Studio is a branding agency headquartered in Toronto, Canada. Their services include Branding and Web Design.
Read more -
$5,000+$100 - $149 / hr10 - 49Gilbertsville, PA
Services provided
Moonlit Media LLC, a web design company, was launched in 1999. The team focuses on Web Design and Logo.
Read more -
$1,000+$50 - $99 / hr2 - 9Brighton, England
Services provided
Mark Design Limited is a branding company launched in 2003. The team provides Branding and Graphic Design and is headquartered in Brighton, England.
Read more -
$1,000+$25 - $49 / hr50 - 249
Services provided
Arham Techpro is a Narayangonj, Bangladesh-based UX company. Launched in 2023, the team offers UX/UI Design and Web Development.
Read more -
$5,000+$25 - $49 / hr50 - 249Noida, India
Services provided
See all 12 projectsMaxtra Technologies is a technology solutions company that specializes in app and e-commerce development. Feedback is mixed, with 50% of reviewers expressing satisfaction with their technical expertise and project execution, while another 50% report dissatisfaction due to unmet promises and project delays. The company is noted for its agile project management style.
-
$50,000+$100 - $149 / hr2 - 9
Services provided
See all 1 projectsIT Desk Limited is an IT services company specializing in project management software development and IT support services. The feedback is predominantly positive, with satisfaction regarding their prompt problem-solving capabilities. However, 100% of reviewers suggest that IT Desk could improve by expanding their service offerings for greater engagement with clients.
-
$1,000+$25 - $49 / hr2 - 9Oradea, Romania
Services provided
Launched in 2019, Planssa is a small Logo company located in Oradea, Romania. Their team offers Logo and Web Design.
Read more -
$5,000+$100 - $149 / hr2 - 9Las Vegas, NV
Services provided
See all 1 projectsREQ is a PR and content creation agency specializing in public sector messaging and content development. The company consistently receives positive feedback for its expertise, with 100% of reviewers highlighting their ability to produce high-quality, audience-specific content. Clients praise REQ for exceptional project management and communication, with no areas identified for improvement, indicating a high level of satisfaction and strong client relationships.
-
$1,000+$25 - $49 / hr2 - 9Machakos, Kenya
Services provided
See all 1 projectsBrooklyn Micro-Tech Systems is an IT services company specializing in computer system upgrades and maintenance. With overwhelmingly positive feedback, 100% of reviewers praised their efficiency and project management, notably completing system upgrades in under 24 hours while ensuring data integrity. Reviewers were universally satisfied, with no suggestions for improvement.
-
UndisclosedUndisclosedFreelancer
Services provided
See all 3 projectsGrowthmarketohs is a content marketing company known for its dedication to delivering high-quality content, including blogs and articles, with a strong emphasis on timely delivery and effective communication. Their consistent performance in SEO improvement and plagiarism-free content has garnered overwhelmingly positive feedback, with 100% of reviewers highlighting their impressive communication and reliability.
-
UndisclosedUndisclosed10 - 49Kohtaguda, India
Services provided
See all 1 projectsD3Concepts Ltd is a design company specializing in creating brochures, flyers, and logos. A consistent theme across reviews is their prompt sketching capability, with 90% of feedback highlighting their quick conceptualization process. While praised for quality and project management, there is a noted need for improved organizational structure, as mentioned by 10% of reviewers.
-
$1,000+< $25 / hr2 - 9Jūrmala, Latvia
Services provided
Logoplanet is a small Logo company founded in 2015. Their services include Logo and Web Design.
Read more -
$5,000+$50 - $99 / hr2 - 9Kaunas, Lithuania
Services provided
In Kaunas, Lithuania, Notsimilar is an UX agency and web design company. Their services include UX/UI Design and Web Design.
Read more -
$5,000+$25 - $49 / hr10 - 49Dnipro, Ukraine
Services provided
See all 4 projectsMENCODEHARD is a versatile development company offering services in WordPress modifications, video production, and mobile app development. Their clients consistently highlight excellent communication and dedication, with 100% positive feedback on responsiveness and client understanding. Areas for improvement include more thorough testing and formal project status updates.
-
$1,000+$25 - $49 / hr2 - 9Bradford, England
Services provided
Alexo Marketing ⚡️ is a web design company launched in 2018. The team specializes in Web Design and UX/UI Design.
Read more -
$1,000+$150 - $199 / hr2 - 9Richmond, VA
Services provided
Shapes & Colors, by Jolinda is a Logo company. Their team is based in Richmond, Virginia and provides Logo and Web Design.
Read more -
UndisclosedUndisclosedFreelancerJersey City, NJ
Services provided
See all 1 projectsProfit Systems for Roofing Companies is a digital marketing agency specializing in SEO, website development, and online advertising management. Reviews consistently highlight their effective project management and impressive leadership, with 100% of feedback noting their clear communication and honest expectations. Some improvement in aesthetic design was mentioned, but progress is evident.
-
UndisclosedUndisclosed2 - 9Argyle, TX
Services provided
Web design agency Green Tulip Design offers Web Design and Digital Strategy. They are headquartered in Argyle, Texas.
Read more -
$1,000+$100 - $149 / hr10 - 49Belfast, Northern Ireland
Services provided
Social media marketing firm Rapid Agency focuses on Social Media Marketing and Web Design. They are headquartered in Belfast, Northern Ireland.
Read more -
Undisclosed$100 - $149 / hr10 - 49
Services provided
See all 1 projectsWitty Web Solutions is a web development company renowned for its exceptional responsiveness and creative budget solutions. They successfully delivered six WordPress sites for Northwestern Settlement, earning positive feedback for their functionality and design. While 100% of the feedback was positive, with users appreciating the communication and cost-effectiveness, there was a minor concern about the customization timeline.
-
$1,000+< $25 / hr10 - 49Bhubaneswar, India
Services provided
See all 1 projects3SD SOLUTIONS AND SERVICES PRIVATE LIMITED is a technology solutions provider specializing in productivity tools, digital mobility solutions, and electronic visitor management systems. Review feedback indicates that 100% of clients appreciated the timely project delivery and effective project management, with some suggestions for improvement in document management. Clients value their direct access to the team and management.
-
$10,000+$50 - $99 / hr10 - 49Osaka, Japan
Services provided
MNET LLC is a small Osaka, Japan-based web design company. Their services include Web Design and UX/UI Design.
Read more -
$10,000+< $25 / hr10 - 49Orlando, FL
Services provided
See all 5 projectsInfylo Techsolutions Ltd. is a custom software development company specializing in creating tailored digital solutions. With a commitment to quality and a strong understanding of business needs, they have received overwhelmingly positive feedback, with clients praising their responsiveness, professionalism, and ability to improve operational efficiency. Approximately 100% of reviewers noted significant improvements in their business processes and satisfaction with Infylo's services.
-
$1,000+$25 - $49 / hr2 - 9New Port Richey, FL
Services provided
Web design agency Loud And Clear Media LLC provides Web Design and Graphic Design. They were launched in 2017.
Read more -
$10,000+$100 - $149 / hr10 - 49İstanbul, Türkiye
Services provided
Lime or Lemon Digital Studios is a mobile app development company. Their small team is located in İstanbul, Türkiye. Their services include Mobile App Development and Web Development.
Read more -
$5,000+$50 - $99 / hr10 - 49Madrid, Spain
Services provided
Dnest Agency is an UX design agency. Based in Madrid, Spain, the agency was founded in 2016. Their services include UX/UI Design and Custom Software Development.
Read more -
UndisclosedUndisclosed2 - 9Flagstaff, AZ
Services provided
INDIGO8 Internet is a web design agency launched in 1998. Located in Flagstaff, Arizona, the team provides Web Design and Graphic Design.
Read more -
$10,000+$150 - $199 / hr2 - 9Calgary, Canada
Services provided
Sajak & Farki, a branding agency, specializes in Branding and Web Design. The agency is in Calgary, Canada.
Read more -
$5,000+$50 - $99 / hr2 - 9Houston, TX
Services provided
See all 3 projectsImaginationeering is an engineering consulting firm specializing in stress analysis and computational fluid dynamics (CFD) services. Across their reviews, 100% of clients highlight their responsiveness and timely delivery, with many appreciating their niche expertise and good value for cost. No areas for improvement were mentioned, reflecting high client satisfaction.
-
UndisclosedUndisclosed2 - 9Guangzhou Shi, China
Services provided
See all 2 projectsGuangzhou Muhua Information Technology Co., Ltd. is a technology solutions provider specializing in integrating advanced technologies such as face recognition, VR, and hybrid development for industries like construction and catering. Reviews indicate high satisfaction, with 100% of clients highlighting their professionalism and responsiveness, and no areas for improvement noted.
-
$1,000+< $25 / hr2 - 9
Services provided
See all 1 projectsWe Think Solutions is a development company specializing in designing and developing end-to-end trading portals. The company is highly praised for its dedication, prompt delivery, and effective communication, with 90% of feedback recommending their services. Reviewers frequently highlight the team's approachability and attentiveness, though there is room for improvement in focusing on individual product tasks.
-
$5,000+$25 - $49 / hr10 - 49دبي, United Arab Emirates
Services provided
See all 1 projectsA2 Solutions is a mobile app development company specializing in native app design and development for iOS and Android. Reviews highlight their strong project management and responsiveness, with 100% of feedback being positive regarding their commitment and value for money. However, 100% of reviewers suggest they could improve by expanding their staffing resources.
-
$5,000+$100 - $149 / hr10 - 49Denver, CO
Services provided
See all 1 projectsdfine Branding is a marketing strategy and digital marketing company known for implementing effective paid search engine marketing campaigns. According to a review, 100% of the feedback is positive, highlighting their strategic approach and expertise. Clients have noted successful project outcomes, including high Google Ads quality scores and smooth workflows.
-
$25,000+$25 - $49 / hr10 - 49
Services provided
See all 1 projectsBridge Technology Services is a company specializing in custom enterprise resource planning (ERP) solutions, particularly using the Odoo platform. Reviews highlight their flexibility and capability to tailor solutions to specific business needs, with 100% of feedback noting improved company efficiency. However, some suggest expanding their workforce to enhance system maintenance speed.
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 in minutes.
Get My MatchesWhy 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 Digital Design Companies
-
$10,000+$50 - $99 / hr50 - 249New York, NY
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
85% Digital Design15% Other -
$10,000+$50 - $99 / hr50 - 249
Ability to deliver
37.3/40.018.6/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
90% Digital Design10% Other -
$5,000+$25 - $49 / hr10 - 49Warszawa, Poland
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
90% Digital Design10% Other -
$10,000+$25 - $49 / hr10 - 49
Ability to deliver
38.7/40.020/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
80% Digital Design20% Other -
$10,000+$150 - $199 / hr50 - 249New York, NY
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
60% Digital Design40% Other -
$50,000+$150 - $199 / hr10 - 49Austin, TX
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
70% Digital Design30% Other -
$10,000+$50 - $99 / hr10 - 49L'viv, Ukraine
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
100% Digital Design -
$5,000+$50 - $99 / hr50 - 249Gdańsk, Poland
Ability to deliver
38.8/40.020/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
60% Digital Design40% Other -
$10,000+$150 - $199 / hr2 - 9Denver, CO
Ability to deliver
38.5/40.019/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
90% Digital Design10% Other -
$10,000+$100 - $149 / hr10 - 49London, England
Ability to deliver
38.9/40.019.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
80% Digital Design20% Other -
$50,000+$150 - $199 / hr10 - 49New York, NY
Ability to deliver
38/40.018.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
75% Digital Design25% Other -
$5,000+$100 - $149 / hr10 - 49Miami, FL
Ability to deliver
34/40.016.6/20 Reviews10/10 Clients & Experience7.4/10 Market PresenceService focus
100% Digital Design -
$1,000+$25 - $49 / hr10 - 49Odesa, Ukraine
Ability to deliver
33.9/40.016.4/20 Reviews10/10 Clients & Experience7.5/10 Market PresenceService focus
100% Digital Design -
$25,000+$150 - $199 / hr10 - 49San Diego, CA
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
60% Digital Design40% Other -
$10,000+$100 - $149 / hr50 - 249Milton Keynes, England
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
50% Digital Design50% Other -
$25,000+$150 - $199 / hr10 - 49San Francisco, CA
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
100% Digital Design -
$10,000+$50 - $99 / hr10 - 49L'viv, Ukraine
Ability to deliver
36.3/40.017/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
100% Digital Design -
$10,000+$50 - $99 / hr50 - 249L'viv, Ukraine
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
100% Digital Design -
$5,000+$100 - $149 / hr10 - 49London, England
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
100% Digital Design -
$10,000+$25 - $49 / hr250 - 999Bengaluru, India
Ability to deliver
33.6/40.015.4/20 Reviews9.9/10 Clients & Experience8.2/10 Market PresenceService focus
75% Digital Design25% Other -
$10,000+$100 - $149 / hr10 - 49London, England
Ability to deliver
39.5/40.019.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
70% Digital Design30% Other -
$5,000+$50 - $99 / hr50 - 249Chicago, IL
Ability to deliver
39.5/40.019.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
55% Digital Design45% Other -
$10,000+$50 - $99 / hr10 - 49Kyiv, Ukraine
Ability to deliver
36.2/40.018.4/20 Reviews9.2/10 Clients & Experience8.5/10 Market PresenceService focus
90% Digital Design10% Other -
$10,000+$100 - $149 / hr2 - 9Toronto, Canada
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
70% Digital Design30% Other -
$5,000+$50 - $99 / hr10 - 49Haarlem, Netherlands
Ability to deliver
36/40.020/20 Reviews10/10 Clients & Experience6/10 Market PresenceService focus
90% Digital Design10% Other -
$5,000+$25 - $49 / hr10 - 49Panaji, India
Ability to deliver
36.7/40.017.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
100% Digital Design -
$1,000+$50 - $99 / hr10 - 49San Diego, CA
Ability to deliver
39.2/40.020/20 Reviews9.7/10 Clients & Experience9.5/10 Market PresenceService focus
60% Digital Design40% Other -
$10,000+$50 - $99 / hr50 - 249Dubai, United Arab Emirates
Ability to deliver
35.2/40.019.4/20 Reviews10/10 Clients & Experience5.8/10 Market PresenceService focus
70% Digital Design30% Other -
$25,000+$25 - $49 / hr10 - 49
Ability to deliver
39.2/40.020/20 Reviews9.7/10 Clients & Experience9.5/10 Market PresenceService focus
60% Digital Design40% Other -
Undisclosed$200 - $300 / hr50 - 249
Ability to deliver
35.2/40.015.6/20 Reviews9.6/10 Clients & Experience9.9/10 Market PresenceService focus
70% Digital Design30% Other
Digital Design Agency FAQs
Digital design agencies create visual assets and user experiences for screens of all sizes. Their teams research user behavior, craft wireframes, design intuitive interfaces, and produce graphics, animations, or prototypes that translate brand goals into engaging digital products. In short, they bridge aesthetics and functionality to make technology easier—and more enjoyable—to use.
Digital design agencies offer a myriad of solutions tailored to ensure clients can leverage compelling visual assets. Their typical offerings include:
- UX research and user journey mapping
- UI design for web, mobile, and emerging platforms
- Graphic and motion design (e.g., icons, illustrations, animations)
- Branding and logo development
- Interactive prototypes and design systems
Some agencies also extend into front-end development, ensuring their designs come to life pixel-perfect.
According to data gathered by our team at Clutch, the average cost of digital design projects reviewed is below $10,000. Hourly rates fall between $100 – $149 depending on location, seniority, and specialization.
Design engagements range widely. Small, single-screen projects may start around $5,000, while full-scale product design or rebranding efforts can exceed $100,000. Request detailed proposals that outline deliverables, rounds of revision, and ownership of design files to avoid scope creep.
Choosing from the countless digital design agencies in the market can feel intimidating. To ensure you are connected with the right team, start by evaluating their portfolios that match your aesthetic and industry. Look for the following traits:
- Verified client reviews highlighting communication and results
- Case studies with measurable outcomes (e.g., increased conversions)
- A process that includes user research and iterative testing
- Team structure—do you get direct access to senior designers?
Shortlist agencies, conduct video interviews, and ask for a small discovery workshop to gauge fit.
Red flags are not to be ignored when selecting and partnering with a digital design agency. Observe carefully and beware of firms that checks any of these traits:
- Promise unlimited revisions without a clear scope
- Lack user research in their methodology
- Reuse templates or fail to provide source files
- Dodge questions about past project challenges or metrics
Transparency and a documented process are non-negotiable traits of a reliable partner. It’s better to be particular than be paired with an unfit team.
- Can you walk me through a recent project similar to ours—from brief to launch?
- How do you integrate user research and testing into the timeline?
- What design tools and collaboration platforms do you use?
- Who will be on our core team, and how many hours will they dedicate weekly?
- How do you handle feedback rounds and scope changes?
When discussing your project with digital design agencies, make sure to ask every project-specific question you have in mind — that includes niche- and design-specific matters. Clear answers to these questions will reveal the agency’s workflow, communication style, and commitment to results.
Freelancers can be cost-effective for small, well-defined tasks but may lack bandwidth for large initiatives. On the other hand, digital design agencies provide multidisciplinary teams—UX researchers, UI designers, motion specialists—offering broader expertise, faster turnaround, and built-in quality assurance. Choose based on project complexity, required skill sets, and timeline.
Leading digital design agencies align design these key performance indicators (KPIs) with business goals:
- Conversion rate lifts after a UI overhaul
- Reduced support tickets due to clearer workflows
- Increased engagement metrics such as time on page or app retention
Tools like A/B testing, analytics dashboards, and usability testing quantify the impact of design changes over time.