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In a world where the average user checks their phone over 150 times a day and mobile devices contribute to more than 60% of global web traffic, designing for smaller screens isn’t a trend anymore—it’s the default.

This shift in user behavior has transformed how digital products are conceived, built, and optimized. Mobile-first design emerged as a response to this reality, urging designers and developers to prioritize the mobile experience before expanding to tablets and desktops.

But mobile-first isn’t just about shrinking layouts or rearranging elements. It’s a strategic approach rooted in clarity, performance, and intent.

When you design for the constraints of mobile, you’re forced to focus on what truly matters—content hierarchy, responsive layout decisions, typography legibility, and lightning-fast interactions.

These constraints often lead to cleaner and more meaningful experiences across all screen sizes.

Today, the mobile-first mindset is the foundation of modern web design systems, influencing everything from navigation patterns and touch-friendly interactions to accessibility standards and performance optimization.

Whether you’re designing a simple landing page or a full-scale digital product, understanding mobile-first design principles in this Design Journal article is crucial to building interfaces that feel natural, intuitive, and future-ready.

What is mobile first design?

Mobile-first design is a development and design philosophy that begins with the smallest screen and simplest context — typically smartphones — and progressively enhances the user experience as screen size, device capability, and available bandwidth increase.

Instead of designing a full-featured desktop experience and then removing or compressing features for mobile, mobile-first starts by asking: What is the essential value the user needs on the go?

From that core, designs scale up to tablets and desktops, adding complexity only where it improves the product.

What is mobile first design? — Image Source: Pixabay

At its heart, mobile-first is about prioritization and progressive enhancement. It forces teams to identify the most important content, actions, and user journeys and deliver them in a way that works well under mobile constraints (small screens, touch input, variable network).

Once the mobile experience is solid, designers and developers layer on enhancements (richer layouts, advanced interactions, additional content) for larger devices.

Why it matters?

Mobile devices dominate everyday internet use: people browse, shop, message, navigate, and make decisions on phones.

Designing first for mobile aligns product decisions with real user context — often rushed, distracted, and bandwidth-limited. That alignment leads to better clarity, faster experiences, and interfaces that actually serve users’ primary goals.

Key characteristics of mobile-first design

Content-first thinking
Mobile-first prioritizes content and user intent. Designers determine the single most important message or action for small screens and structure the interface to make that obvious.
Progressive enhancement
Start with a baseline experience that works in constrained environments, then add features for devices that can handle them (larger screens, greater processing power, stable networks).
Simplified interaction model
Interactions are optimized for touch: large tap targets, clear affordances, and gestures where appropriate. Complex hover behaviors or tiny UI controls are avoided.
Performance as a baseline
Mobile-first assumes varied network conditions. Fast load times, minimal payloads, and efficient rendering are first-class requirements, not afterthoughts.
Adaptive layout and breakpoints
Instead of rigidly scaling one layout, mobile-first solutions use breakpoints and fluid grid system that allow layouts to reflow naturally as space increases.
Accessibility and inclusivity
Designing for mobile often leads to greater accessibility: larger text, simpler navigation, and reduced cognitive load benefit users with disabilities and older adults.

How it differs from desktop-first?

Desktop-first design typically begins with a full-featured experience and later tries to condense it for mobile. That often produces cluttered mobile UIs, hidden priorities, and performance problems.

Mobile-first inverts the workflow: make the essential experience excellent first, then expand. This inversion results in cleaner information architecture, clearer user journeys, and better performance across devices.

Mobile first design principles

Designing for mobile first isn’t just a workflow preference—it’s a disciplined way of thinking that forces clarity, intent, and usability from the ground up.

The following mobile first design principles form the foundation of purposeful, user-centric digital experiences that start small and scale gracefully.

Prioritize core content and user intent

The most fundamental principle of mobile first design is starting with what matters most. The limited screen space forces teams to identify the single, primary purpose of the page or product.

What does the user come here to do, especially on mobile? This question shapes information hierarchy and ensures that non-essential elements don’t overshadow the primary content or action.

When designers apply this mindset, decisions about layout, messaging, CTAs, navigation, and visuals become intentional instead of decorative.

Every pixel must earn its place. By focusing on core content early, the mobile experience becomes clearer, faster, and more accessible—qualities that benefit the desktop experience as well.

This principle also drives strategic thinking. Instead of cramming features into a mobile design as an afterthought, mobile-first design principles require teams to strip away noise and highlight value.

Prioritizing essentials leads to cleaner architecture and a more predictable user experience across all devices.

Use progressive enhancement (not graceful degradation)

Traditional desktop-first approaches rely on “graceful degradation,” where complex designs are gradually cut down for mobile.

Mobile-first design applies the opposite: progressive enhancement. You begin with a lean, fully functional mobile app design experience, then enhance capabilities as screens grow.

This ensures your baseline experience is strong, stable, and inclusive even under mobile constraints—small screens, touch input, and inconsistent bandwidth.

Users on low-power devices still get a complete experience, while those on desktops enjoy enhancements like richer layouts, expanded content, animations, or advanced interactions (and other mobile app design elements).

With progressive enhancement, mobile-first design principles automatically create a scalable design framework.

The shift from minimum viable experience to maximum possible experience becomes more seamless, reducing UX inconsistencies and ensuring that every added feature increases value rather than complicating the interface.

Design for touch and natural finger interaction

Mobile-first design demands a touch-first mindset. Users interact with their thumbs, not cursors, which fundamentally changes how buttons, links, menus, and interactive components should behave.

Tap targets must be large, spaced adequately, and easy to reach—even during one-handed use.

This principle extends to natural movement patterns. Users scroll vertically more than horizontally, rely on gestures like swiping, and expect screens to respond instantly to touch feedback.

Designing mobile UX without considering these behaviors leads to accidental taps, navigation friction, and user frustration.

Touch-first design also enhances accessibility. When UI elements are spaced and sized for fingers, they become easier to navigate for users with motor impairments or larger hands.

This approach strengthens usability across all devices, even desktops, where clear spacing and large targets improve scanning and interaction reliability.

Keep navigation simple and uncluttered

Navigation is often the most challenging part of mobile first design because the screen doesn’t allow for large menus or complex pathways.

Mobile-first design principles encourage creating simple, discoverable, and intuitive navigation systems that don’t overwhelm or hide essential paths.

This may include hamburger menus, bottom nav bars, priority-plus menus, tab bars, or contextual navigation that appears only when needed.

The focus is always to help users reach their goals with minimal taps. If the navigation feels heavy or confusing on mobile, it will create friction everywhere else.

Streamlined navigation also forces clarity in information architecture. When content categories must fit within mobile constraints, designers make smarter structural decisions—merging redundant pages, simplifying labels, and creating more linear user flows.

These improvements ripple upward to tablet and desktop displays.

Establish clear visual hierarchy and scalability

Mobile-first design emphasizes scannability, because users on phones often browse on the go—between tasks, during travel, or in short bursts of attention. This makes visual hierarchy critical.

Designers must guide the eye through intentional typography, spacing, color, and alignment.

Good hierarchy highlights what’s important and ensures users never feel lost. Headlines, subheads, CTAs, and content blocks need to be visually distinct and arranged in a logical sequence.

Consistent spacing and contrast help users skim content quickly, making the experience feel lighter and more intuitive.

Effective hierarchy also stabilizes the design when it scales up. When core structure is defined on mobile, larger layouts become easier to expand.

Designers simply layer more visual richness—additional columns, images, or spacing—without breaking the underlying logic of the page.

Optimize performance and speed as a core requirement

Speed is not optional in mobile-first design. Many users have variable network conditions, limited data plans, or older devices.

Mobile first design principles prioritize performance early—from the way content loads to how images, scripts, and animations are delivered.

This includes using lightweight assets, compressed media, responsive image formats, and optimized code.

Designers and developers also embrace techniques like lazy loading, prefetching, and delivering critical content first. When the mobile version loads fast, the desktop version becomes even faster.

Performance optimization strengthens user trust. A fast-loading interface feels more reliable and polished, leading to higher engagement, lower bounce rates, and better conversions.

Mobile-first teams treat performance as a design decision, not a technical afterthought.

Build flexible, responsive layouts that scale gracefully

Responsive design is not the same as mobile-first—but mobile-first makes responsive design stronger.

Using fluid grids, responsive typography, and scalable components ensures that layouts naturally expand from mobile to large screens without breaking.

This principle avoids rigid desktop layouts that collapse poorly on mobile. Instead, the mobile version sets the structure: single-column layouts, clear content order, and linear flow.

As screens grow, the layout can introduce multi-column grids, lateral spacing, and expanded components.

A flexible system also reduces development overhead. When the mobile layout is clean and consistent, developers can extend the design with fewer custom breakpoints, cleaner CSS, and more predictable component behavior across devices.

Ensure accessibility and inclusive interaction patterns

Accessibility is built into mobile-first design because designing for mobile already demands simplicity, clarity, and ease of interaction. This overlaps with WCAG principles like perceivable, operable, understandable, and robust interfaces.

Accessibility in mobile-first design includes readable font sizes, proper color contrast, touch-friendly components, screen-reader compatibility, and logical focus order.

Users with disabilities, temporary impairments, or situational limitations (sunlight glare, one-hand use, low connectivity) all benefit from inclusive design.

Treating accessibility as a core mobile-first design principle creates interfaces that feel clean and usable for everyone.

It also prepares the product for long-term scalability, legal compliance, and higher-quality user experiences across markets and devices.

Mobile first design best practices

Creating a mobile-first design ensures that your website or application delivers an optimal user experience on smaller screens. By prioritizing mobile usability, you can enhance performance and accessibility for a wider audience.

Start with content strategy, not UI polish

When you adopt a mobile-first design process, begin by defining the content and user intent before any visual styling.

Identify the primary tasks users must complete on mobile (purchase, search, read, book, message) and map the minimal content and UX writing required to support those tasks.

A clear content strategy prevents designers from decorating bandwidth-sensitive screens with secondary information that distracts from core goals.

Translate that content clarity into wireframes and information architecture that mirror real mobile behaviour — short attention spans, vertical scanning, and quick decision points.

Use short headlines, concise CTAs, and progressive disclosure for secondary details. This content-first mindset is one of the most practical mobile first design best practices because it reduces scope creep and keeps interactions purposeful.

Finally, ensure the content strategy is documented and shared with engineering, QA, and product teams.

When copy, data requirements, and content priorities are explicit, performance optimizations, internationalization, and A/B testing become easier to implement. Building around content also helps desktop expansions feel authentic; larger screens add context and visuals, not redundant copy.

Design and test on real devices early and often

Mockups on a 27-inch monitor are an illusion of user experience; the reality of mobile first design lives on actual phones.

Test prototypes on devices that represent your audience mix (low-end Android, iPhone SE, midrange models) to find layout issues, touch target problems, and readability errors that never show up in desktop previews.

Early device testing reveals constraints you must design for — variable CPU, screen aspect ratios, and even browser quirks.

Emulate real network conditions and battery states during testing. Mobile users frequently operate on slow or flaky connections, so the experience must remain usable under throttled networks.

Use tools or device settings to simulate slow 3G/4G, and observe how content loads, how skeleton screens behave, and whether critical interactions remain fast and clear.

Incorporate device testing into iterative usability sessions with real users. Watching how people hold the phone, which thumb zones they prefer, and where they hesitate uncovers interaction patterns that designers rarely predict.

Making device testing a recurring activity — not a final checkbox — is one of the most impactful mobile first design best practices you can adopt.

Make touch interactions obvious and forgiving

Mobile interfaces require a touch-first interaction model: tappable elements should look tappable, be sized for fingers, and provide immediate feedback.

Follow minimum target sizes (commonly around 44–48px) and maintain adequate spacing between tappable items to reduce accidental activation. Visual affordances—shadows, borders, micro-animations—help users understand interactivity without adding cognitive load.

Design for common hand positions and accidents. Place primary actions in thumb-reachable zones for ergonomic comfort, especially in one-hand modes.

Provide multiple ways to complete the same task when possible (e.g., primary CTA plus contextual actions) and make undo/revert paths simple—this reduces the perceived cost of mistakes on small screens.

Make feedback instantaneous and meaningful: button presses should show tactile animations or ripple effects, load states should use skeleton loaders or inline spinners, and errors must be presented clearly with corrective guidance.

These behaviors form a forgiving interaction system that aligns with mobile users’ expectations and is a cornerstone of mobile first design best practices.

Optimize for speed: perceived and actual

Performance is a core user experience metric for mobile, and optimizing for speed must be embedded in the design process.

Prioritize what content and assets are critical to the first meaningful paint and defer everything else. Design patterns like skeleton screens, prioritized content chunking, and fast CSS rendering reduce perceived latency even when networks are slow.

From a production standpoint, use responsive image techniques (srcset, AVIF/WebP where supported), lazy loading, code splitting, and minimal JavaScript on initial load.

Designers should plan for performance: limit heavy hero images, avoid auto-playing media, and prefer vector or icon fonts for UI elements. Collaboration between design and engineering on budgeted asset sizes and load budgets is essential.

Measure both perceived and measured performance (First Contentful Paint, Time to Interactive, Largest Contentful Paint) and iterate using real analytics.

Use a performance budget as a decision tool—if a new feature violates the budget, either defer it on mobile or redesign it more efficiently. Treating speed as a design constraint is one of the strongest mobile first design best practices.

Craft clear, thumb-friendly navigation

Navigation on mobile must be predictable, shallow, and reachable.

Design navigation systems that surface the most important destinations while keeping secondary or rare paths accessible but unobtrusive—examples include bottom navigation bars for primary sections, priority menus with “more” overflow, and contextual floating actions for current tasks.

Avoid deep nav hierarchies on mobile; break complex workflows into linear, manageable steps and use microcopy to confirm progress or context.

When you include many destinations, use smart routing patterns such as progressive disclosure, search-first flows, or personalized shortcuts that reduce friction for frequent tasks.

Also think about cross-device continuity. Navigation patterns should map logically when the interface scales up to tablet or desktop—bottom nav can become a left rail, and priority actions can shift into toolbars.

Designing with these transitions in mind ensures the mobile navigation choices don’t create awkward desktop experiences later.

Design flexible components and scalable systems

Build components that adapt, not just resize. Mobile first design best practices favor modular, stateful components that handle truncation, multi-line content, icon resizing, and different interaction modes.

A button should gracefully handle long labels, icons, or loading states; a card should accept variable image heights without breaking layout.

Use a consistent design system with defined spacing scales, typography scales, and responsive tokens so components behave predictably across breakpoints.

Document component behavior for edge cases (very long words, RTL text, accessibility zoom) so developers and content teams know how elements should behave in real scenarios.

Invest in component resilience early—fewer exceptions mean fewer bugs and faster feature development. Systems thinking in component design is a high-leverage mobile first design best practice that reduces maintenance costs and keeps the product coherent as it grows.

Prioritize accessibility, localization, and error tolerance

Mobile environments amplify the need for accessible and tolerant interfaces. Ensure text sizes, contrast ratios, and touch targets meet accessibility standards; provide meaningful alt text and semantic structure so screen readers present content logically; and avoid color-only indicators.

Accessibility benefits everyone and is a non-negotiable part of mobile first design best practices.

Plan for localization and diverse user contexts: support right-to-left languages, allow for text expansion in translations, and test layouts with localized content.

Design forms and inputs to reduce errors on mobile—use input masks, contextual keyboards, inline validation, and saved progress so users don’t lose work due to typos or interruptions.

Finally, adopt error-tolerant patterns: autosave, optimistic UI for short actions, gentle confirmation for destructive tasks, and clear recovery steps when something goes wrong.

Combining accessibility, localization, and error tolerance not only meets legal and ethical standards but also materially improves retention and conversion on mobile devices.

Mobile first design examples

Understanding mobile first design becomes much clearer when you examine real products that successfully apply it.

These mobile first design examples demonstrate how different brands prioritize clarity, speed, and usability on small screens, then scale up to richer desktop experiences.

Each example highlights a unique approach to solving mobile constraints while improving the experience across all devices.

Google Search

Google’s entire interface is engineered using a mobile first design philosophy. The homepage reflects extreme prioritization: one search bar, minimal navigation, and no distractions.

On mobile, this simplicity becomes a strength—fast loads, instant interactivity, and clear intent. Google’s decision to keep the layout minimal ensures that even on slow networks, the search experience feels instantaneous.

The results page is another strong mobile first design example. Content is structured vertically, with snippets, ads, images, and knowledge panels stacking in a predictable rhythm.

Each element is designed to scan quickly, eliminating horizontal clutter entirely. Touch-friendly filters and tabs also make it effortless to refine results with one hand.

On desktop, the interface expands but never loses its mobile foundation. Side panels, expanded filters, and richer visuals appear only when space allows—demonstrating effective progressive enhancement. Google proves that clarity is not restrictive; it scales beautifully when done right.

Airbnb

Airbnb’s mobile interface is a benchmark in task-driven mobile first design. The homepage focuses on core user intent: search, explore, and book.

Instead of overwhelming users with travel categories and promotions, it begins with a simple search bar and personalized recommendations—ideal for users browsing on the go.

The listing pages show another thoughtful mobile-first approach. Large images, swipeable galleries, sticky CTAs, and bold price displays support thumb-friendly interactions.

Content is structured linearly, allowing users to skim descriptions, amenities, reviews, and policies quickly without jumping around.

On desktop, Airbnb scales the same flows into wider grids, maps, and side-by-side layouts. This adaptive transition shows how mobile-first thinking leads to a more intuitive and organized desktop interface, not the other way around.

Airbnb is one of the strongest mobile first design examples for scalable navigation and decision-making flows.

Instagram

Instagram is a true mobile-native platform, crafted primarily for smartphone use long before its desktop experience expanded. The vertical feed, double-tap interactions, swipe gestures, and thumb-friendly posting actions show a deep understanding of how people use their phones.

This mobile-first design example also highlights thoughtful performance optimization.

Images load progressively, prefetching is used for posts likely to appear next in the feed, and the UI minimizes chrome (headers, borders, heavy dropdowns) to keep content front and center. Everything about Instagram screams mobile-first efficiency.

Interestingly, Instagram’s desktop interface is not a duplication—it’s a scaled-up version of mobile logic. The same feed structure, navigation icons, and content hierarchy remain intact. This consistent UX across devices is possible only because the mobile-first foundation is strong.

Amazon

Amazon’s mobile site and app are proof that even extremely content-heavy platforms can execute mobile first design effectively.

The homepage prioritizes personalized modules, quick reorders, and high-converting categories rather than overwhelming banners or promotions. Despite massive inventory, Amazon keeps the structure linear and scannable.

Their product pages showcase another mobile-first design example:
– Sticky “Add to Cart” bar
– Large product images and pinch-to-zoom
– Bullet-based feature highlights
– Clean section dividers
– Reduced text density for mobile screens

All of these elements increase conversion rates by making decision-making easier on handheld devices.

Desktop views expand into multi-column layouts, richer comparison tables, and more detailed navigation. But the core journey—search → product page → checkout—remains derived from the mobile-first blueprint.

Uber

Uber’s app is one of the most iconic mobile first design examples because it solves an on-the-go problem: booking a ride under time pressure.

The user interface prioritizes speed and clarity, asking only one core question upfront—Where to? The map fills the screen for spatial context, while suggested destinations make the experience even faster.

The flow is intentionally minimal: choose destination, set pickup, confirm ride. All actions are designed for single-handed use with large tap targets and predictive suggestions.

Network-dependence is handled gracefully with cached maps and lightweight UI components that load instantly.

Uber’s desktop experience is extremely limited by comparison, because the product design is fundamentally mobile-first. This proves that not all mobile-first designs need a full desktop expansion—sometimes the mobile experience is the product.

Twitter (X)

Twitter’s mobile interface focuses on high-frequency actions: scroll, like, retweet, reply. The feed is optimized for continuous thumbs-up interaction, with large tap zones around icons and an infinite scroll layout that loads quickly even on slow connections.

The mobile-first design is evident in their content prioritization. Each tweet is clean, text-focused, and surrounded by ample whitespace to improve readability on small screens.

Composer UI is lightweight, with contextual tools that expand only as needed (e.g., polls, images, scheduling).

On desktop, Twitter scales horizontally, adding side panels for trends and recommendations. Yet the primary column—the feed—still mirrors mobile, proving that the mobile-first structure is strong enough to anchor the entire product across devices.

Spotify

Spotify’s mobile-first approach centers on reducing friction for core tasks: search, play, and browse. The app uses large album art, bold fonts, simplified controls, and clear grouping to support on-the-go listening.

Music browsing happens through vertically stacked cards, chunked categories, and fluid transitions that feel natural on mobile. Playback controls are thumb-friendly and float where they’re easiest to reach.

The desktop version expands into a more robust interface—sidebars, larger playlists, and detailed settings—but still inherits its simplicity and clarity from the mobile-first foundation. Spotify is one of the best mobile first design examples for interaction clarity and minimal cognitive load.

Medium

Medium’s reading experience is a classic case of mobile-first typography and spacing. Articles are presented in a single column with optimal line length, generous padding, and legible font sizes.

The reader’s focus is protected—no distracting utilities, dropdowns, or advertising modules.

The writing interface also reflects mobile-first design thinking: simple controls, contextual formatting, and a clean canvas. Authors can easily edit or publish articles from their phones without losing control over layout or formatting.

Medium’s desktop site adds more reading tools, publication dashboards, and multi-column layouts, but the core reading rhythm remains unchanged. This makes Medium an excellent mobile first design example for content-heavy products.

Conclusion

Mobile-first design is no longer a design trend—it’s a necessity shaped by how people live, browse, and interact with digital products today.

With mobile usage surpassing desktops globally, designing for smaller screens first ensures experiences that are intentional, focused, and highly usable.

This approach doesn’t just create better mobile experiences—it strengthens the entire product ecosystem. When you refine your priorities for the smallest screen, you set a foundation that makes desktop design more structured, accessible, and intuitive.

Mobile-first design also supports technical best practices such as responsive design, progressive enhancement, and performance optimization, all of which lead to more stable, future-ready products.

Whether you’re designing an eCommerce platform, a content portal, or a SaaS product, mobile-first design offers a strategic advantage—helping you build digital solutions that are not only visually appealing but fundamentally user-centric.

Frequently asked questions

Is web design 1440 or 1920?

Both 1440px and 1920px are widely used desktop design breakpoints, but the choice depends on your design strategy.

1440px is considered the safer, more universal width because it works well across most laptops and mid-sized monitors. It fits the 1366px–1536px range commonly used in real-world environments.

1920px is used when targeting large-screen desktops, dashboard-heavy interfaces, or enterprise tools where extra horizontal space enhances usability.

In modern responsive design, you typically design:

Mobile first (360px–414px)
Tablet (~768px–1024px)
Desktop (1440px as the main breakpoint)
Extended desktop (1920px for widescreens)

So it’s not 1440 or 1920—it’s about designing both, with 1440px as the primary breakpoint in most cases.

Is mobile first design still relevant?

Yes—more than ever. Mobile-first design remains one of the most relevant and practical strategies in modern product development. Over 60% of global traffic comes from mobile devices, and users expect fast, intuitive, thumb-friendly interfaces everywhere they go.

Mobile-first design ensures:

Better performance and faster load times
Cleaner, less cluttered interfaces
Improved accessibility and usability
Stronger responsive foundations
More predictable scaling toward desktop

Even as devices get larger and more diverse, mobile-first design keeps teams focused on core content and essential flows. Its relevance hasn’t decreased—it has become a default mindset for designing successful digital products.

What does mobile first design prioritize?

Mobile-first design prioritizes core content, essential functionality, performance, and usability above everything else. Because mobile screens have limited space, designers must identify the most important tasks users want to accomplish and build around those actions.

Key priorities include:

Essential content first (no clutter or unnecessary elements)
Touch-friendly interactions (large tap targets, simple gestures)
Fast performance (lightweight assets, quick load times)
Clear hierarchy and scannability
Responsive layouts that scale up naturally

By prioritizing only what truly matters, mobile-first design creates experiences that are simple, fast, and user-centric—and these benefits carry over to all other devices.

What is the history of mobile first design?

The concept of mobile-first design was formally introduced by Luke Wroblewski in 2009. At the time, the design world was still dominated by desktop-first thinking, but Wroblewski argued that mobile devices were quickly becoming the primary point of access for users worldwide.

His proposal challenged the industry to reverse the workflow:

Design for mobile constraints first
Then progressively enhance the experience for larger screens

When smartphones exploded in popularity in the early 2010s, this philosophy became essential. Google reinforced the shift by adopting mobile-first indexing in search rankings (2016 onwards), which meant mobile experiences would determine SEO performance.

Today, mobile-first design is considered a standard best practice, not just a theory. It evolved from a bold idea into a foundational approach that shapes modern UI/UX, responsive design, and product strategies across industries.

Mobile First Design: Principles, Examples And Best Practices

Muskan Desai

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