SFCC Site Speed Optimization: Technical Implementation Guide 

Understanding SFCC Performance Architecture

Let’s start with a simple truth—speed isn’t just about faster websites, it’s about smarter architecture. In Salesforce Commerce Cloud (SFCC), performance is built into the very structure of how things are developed and rendered. 

But how do you, as a developer or architect, tap into that efficiency?

First, you need to understand the SFRA—SiteGenesis’s modern cousin. This Storefront Reference Architecture is modular, flexible, and built for performance. It encourages reusable components and clean separation of logic. That means fewer headaches for you when scaling or tweaking features, and more speed for your users.

But there's a catch—front-end and back-end responsibilities are split. And if one side isn’t optimized, it drags the other down. 

On the client side, you deal with rendering, image loading, and JavaScript execution. On the server side, it's about how fast your templates and scripts respond, how caching is handled, and whether your controllers are lean.

To help you visualize it better, the diagram below shows how SFCC splits performance responsibilities between the client and server sides.

Now, to make real performance gains, you need to measure what matters. Metrics like Time to First Byte (TTFB), First Contentful Paint (FCP), and Time to Interactive (TTI) aren’t just jargon—they’re how you track what users actually feel.

When you know which layer is lagging and which metric is suffering, you’ll know exactly where to optimize. That’s when your site stops being just functional and starts feeling effortless.

Baseline Performance Analysis

Before you start optimizing anything in your SFCC site, you need to know what’s already working—and more importantly, what isn’t. That’s where baseline performance analysis comes in. Think of it as your “before” picture. Without it, how will you know whether your efforts are actually improving speed?

Start by defining what success looks like. Are you aiming to reduce Time to First Byte (TTFB)? Speed up Largest Contentful Paint (LCP)? Improve your PageSpeed score? Set clear performance KPIs that align with both business goals and user experience. Don’t just say “make it faster”—be specific.

Once your goals are clear, it’s time to measure. Use tools like:

• Lighthouse for in-browser audits of Core Web Vitals
• WebPageTest to simulate real-world loading across networks
• Chrome DevTools for deep dives into what’s blocking your page
• SFCC Performance Center to analyze backend response times

But here’s the catch: run these tests on multiple pages—home, PLPs, PDPs, checkout—not just one. Each has its own unique performance footprint. And always test both desktop and mobile views.

When you're done, document everything. That baseline is what future improvements will be judged against.

Now you're ready to get technical.

Backend Optimization Strategies

Alright, benchmarks are done—now let’s pop the hood and see how we can really tune the backend to make your SFCC site fly.

1. Controller and Pipeline Optimization

When you're working with Salesforce Commerce Cloud (SFCC), one of the first things you need to get right is how your logic flows—because messy backend logic is one of the top culprits behind slow page loads. That’s where controller and pipeline optimization comes into play.

Let’s start with the big decision: Are you still using pipelines or have you fully shifted to controllers in SFRA? If it's the former, you're holding on to legacy tech that’s harder to maintain and slower in execution. 

Controllers, on the other hand, are modular, JavaScript-based, and offer better control and flexibility. So if performance is your goal, you want to keep your backend logic cleanly structured in controllers.

Once you're on controllers, the next step is to move all the heavy logic out of your ISML templates. Templates are meant for display—not data crunching. So, push any processing into the controller or model files and just pass clean, ready-to-render data to the view.

Now, here’s a trick that’s often overlooked—caching parts of your response. SFRA gives you handy decorators like server.cacheResponse, which you can apply to any controller route that doesn't need to update every time. Think headers, footers, or even category grids.

Take a look at the visual below to see how controller-based flows outperform traditional pipelines and where smart caching can make a big difference.

Breaking your controllers into smaller, reusable functions also helps. It makes testing easier, improves readability, and lets you plug-and-play common logic like authentication or locale settings without repetition.

Do this right, and you’ll see real gains in load times—especially under traffic.

2. Efficient Data Layer Handling

Let’s be honest—your site’s speed will never feel “fast” if your backend is constantly overloaded with redundant data calls. When you’re building with SFCC, one of the smartest places to start optimizing is the data layer. 

This is where you decide how your application fetches, stores, and reuses information like product details, promotions, or customer preferences.

Start by evaluating the number of OCAPI or SCAPI calls you're making. Are you pulling the same product or inventory data multiple times across the same page? That’s unnecessary weight. Instead, consolidate these calls—either batch them or request only what’s absolutely required.

Next, make friends with SFCC’s CacheMgr. This tool lets you temporarily store data like category menus, promo messages, or price rules—basically anything that doesn’t change every few seconds. You decide how long the cache should last, which means you control the balance between performance and data freshness.

Also, avoid placing data-heavy operations inside nested loops. Why? Because every extra iteration adds exponential load. Pre-fetch whatever you need outside the loop, then just reference it inside.

Here’s a simple framework to guide your decisions:

Trim the fat from your data logic, and you’ll be amazed how quickly your pages start to respond.

3. Cartridge Management and Lazy Loading

When it comes to optimizing SFCC site speed, managing cartridges efficiently is a smart starting point. You might be using cartridges that aren’t essential to every page—but guess what? Even unused ones still get loaded if they’re in the pipeline. That slows things down, especially under traffic.

So here’s the rule: keep your cartridge list lean and clean. 

If a feature isn't needed in the current environment (like a dev tool in production), disable it in your bm_app_server or app_server config. This alone can shave off milliseconds from backend load times.

Now, think modular. Don’t load everything at once—load only what’s needed, when it’s needed. Let’s say you’ve got a review feature or a loyalty module. Do all users need it on the homepage? Probably not. That’s where lazy loading comes in. You control what gets initialized per page.

To help you visualize this better, the following image compares how full cartridge loading slows performance versus selective, need-based loading:

Lazy loading works great for custom features too. You can wrap non-critical logic in flags, so it doesn’t run until the right condition is met. This is especially useful for routes and middleware that aren't always triggered.

By trimming unnecessary cartridges and deferring the rest, you’re not just improving performance—you’re keeping your codebase smarter and cleaner. And that directly translates into a faster, smoother user experience.

Frontend Optimization

You’ve probably noticed that even a few seconds of delay in loading your site can lead to lost sales, right? That’s because online shoppers expect pages to load instantly—especially on mobile. Now, while SFCC gives you a powerful backend, the real magic—or disaster—happens on the frontend. If your JavaScript is too heavy, images are uncompressed, or your CSS blocks rendering, your site slows down no matter how good your infrastructure is.

This isn’t just about ticking boxes in a speed test. A fast-loading frontend means smoother browsing, quicker interactions, and better SEO scores. It directly improves metrics like bounce rate, average session time, and conversions.

So, what can you do to make sure your SFCC site not only looks good but also loads like lightning? You need to take a smart, structured approach to frontend optimization—focusing on the things that truly matter for speed and user experience.

Here’s how to optimize the frontend:

1. Minimizing Render-Blocking Resources

When someone visits your SFCC storefront, their browser wants to display the page as quickly as possible. 

But here’s the problem — some resources, especially CSS and JavaScript files, get in the way. These are called render-blocking resources because the browser can’t finish loading the visible part of the page (also known as "above the fold") until it fully downloads and processes them.

So how do you fix that?

The first step is to change how you load JavaScript files. Not all scripts need to run immediately. You can defer non-critical ones using defer, which tells the browser to keep building the page while the script loads in the background. 

If the script isn’t tied to your core functionality — like a chatbot or analytics — use async so it loads independently.

Next, look at your CSS. 

Instead of loading all stylesheets at once, you should inline only the critical CSS — that’s the part needed to render the first screen users see. This way, the browser doesn’t have to wait for large external files just to show basic content. 

And finally, preload assets that are crucial to the first impression — like your primary font or hero image. Use the <link rel="preload"> tag to load them early: 

By doing this, you're helping the browser prioritize what matters most — showing your site fast and smooth, without unnecessary delays.

2. Image Optimization

Let’s be honest—images are the first thing your customers notice. Whether it's a product photo or a banner, they catch the eye and shape the first impression. But here’s the catch: unoptimized images can seriously slow down your site. And on SFCC, where performance ties directly to conversions, that’s a big deal.

So where do you start? First, understand what "optimization" really means. It's not just shrinking the image size. It's about delivering the right image in the right format to the right device.

You should be using Dynamic Media on SFCC—it’s built for this. It automatically resizes and serves images based on screen size, which means no more one-size-fits-all files. This keeps load times short, especially on mobile.

Take a look at the visual below—it compares how the same product image looks and loads across JPEG, WebP, and AVIF formats on different devices.

Now, ask yourself: why send a giant desktop image to a mobile user? You don’t. That’s where responsive images come in. Using srcset or <picture>, the browser chooses the ideal image size. It’s automatic and smart.

Also, lazy loading matters. With loading="lazy" on your <img> tags, images below the fold won’t load until they’re needed. This lightens the initial load, which boosts speed without affecting user experience.

In short, better images don’t mean heavier pages—they mean smarter delivery.

3. JavaScript and CSS Management

JavaScript and CSS play a huge role in how fast your SFCC site feels to users. But when these files are bloated or poorly managed, they slow everything down—from how quickly your page loads to how smoothly it runs. 

So how do you keep them lean and efficient without breaking functionality?

Start by asking yourself—do all your scripts and styles really need to load on every single page? Probably not. That's where code splitting comes in. Instead of bundling everything together, break your code based on routes or page types. That way, your checkout page doesn’t carry the weight of homepage sliders or PDP-specific carousels.

Now, once your code is structured smartly, focus on trimming the fat. Tools like Webpack can tree-shake your JavaScript, which means it automatically removes anything you imported but never used. You should also minify your CSS and JS files. This strips out all the unnecessary characters—like spaces and comments—making them lighter to load.

If your project still runs on jQuery, it might be time to rethink that. Modern browsers now support most of the tasks jQuery was once needed for. Rewriting components in plain JavaScript can reduce your script size significantly.

And finally, bundle only what’s essential, and defer what isn’t. Load heavier scripts asynchronously or defer their execution until after your core content has loaded.

You’ll see the difference—faster pages, better scores, and happier users.

Caching and CDN Implementation

Now that you’ve nailed down the code-level and frontend tweaks, let’s talk about something just as powerful—but often overlooked: caching and CDNs. Think of these as your behind-the-scenes speed boosters. You don’t always see them working, but when set up right, they can shave off seconds from your page load time like magic.

Why is this important? Because every second your page takes to load, you risk losing a customer. With smart caching, you avoid re-processing the same data again and again. 

And by routing your site through a CDN, you deliver images, scripts, and even full pages from servers that are physically closer to your user. That means faster site access, lower server stress, and better user experience—without changing your core logic.

So, before you move on to anything else, make sure you’re leveraging caching layers and CDNs to their full potential. This step alone can skyrocket your SFCC store’s performance.

1. SFCC Caching Strategies

SFCC provides multiple levels of built-in caching mechanisms to enhance performance. These help you reduce server load, avoid redundant data processing, and deliver content faster to users. Caching in SFCC can be categorized into:

Page Caching:

Page caching in SFCC is like saving a ready-to-serve version of your webpage so you don’t build it from scratch every time a user visits. Instead of re-running backend code and reloading product data, SFCC stores the final HTML and simply delivers it instantly.

This works best for pages that don’t change per user—like the homepage or a category page. To enable it, you can use a simple decorator in your controller like cache.applyDefaultCache.

It’s fast, effective, and reduces server strain. But be careful—you wouldn’t want to cache dynamic pages like carts or checkout where data changes per user.

Fragment Caching:

header, banner, or menu every time a page loads, you let SFCC store that chunk once and reuse it wherever it’s needed. Sounds smart, right?

Here’s how you can think about it: if a section of your page doesn’t change often—like a promo ribbon or footer—why waste time rendering it again and again? With <isinclude> and ISML.cache(), you tell SFCC, “Hey, save this part and stop rebuilding it each time.”

This speeds up page load, reduces server strain, and keeps things snappy for users. So before caching a full page, always ask—can you break it into fragments and optimize those first?

Data/Object Caching (CacheMgr):

Let’s talk about Data/Object Caching using CacheMgr in SFCC—this is your go-to method when you want to avoid repeating expensive operations like database calls or API fetches.

Imagine you have a function that pulls shipping options or store timings. If that data doesn’t change often, why fetch it every single time? That’s where CacheMgr steps in. It stores the result in memory (RAM), so next time, the system grabs it instantly—no processing, no delay.

Here’s the beauty: you don’t have to manage expiry manually. You define a cache name, provide a key, and SFCC handles the rest.

Use this for frequently accessed but rarely updated data. Just don’t cache user-specific or real-time info—those need fresh data always.

Think of CacheMgr as your backstage assistant quietly making everything run faster without asking for credit.

Cache Invalidation & Refresh:

Let’s say you’ve cached product details or page fragments in SFCC. Great—it speeds things up. But what happens when a product goes out of stock or the price changes? If you don’t clear that cached data, your site will show outdated info. That’s where cache invalidation and refresh come in.

Think of it like this: caching is smart, but not psychic. You need to tell it when to update. So, anytime your data changes—like after a catalog import, promotion update, or inventory sync—you should clear or refresh the relevant cache entries.

You can do this programmatically using invalidate() or clear() from SFCC’s CacheMgr. Here’s how:

You can also schedule cache refresh jobs in Business Manager or trigger them via backend events. Just make sure you target only the cache keys that actually need updating—it keeps things efficient and fast.

2. CDN-Level Optimization (Akamai / Cloudflare / Fastly / etc.)

A Content Delivery Network (CDN) is a geographically distributed network of servers that delivers static and dynamic content to users from the nearest edge location. SFCC integrates well with CDNs like Akamai, Cloudflare, and Fastly to serve assets faster and offload traffic from origin servers.

Below are key techniques and best practices:

HTML and Static Asset Caching:

When it comes to speeding up your SFCC site, HTML and static asset caching is where you start. Think of it like this—why serve the same content again and again when you can just store and reuse it?

Start with caching HTML for high-traffic pages like the homepage or category pages—but only for users who aren’t logged in. These rarely change and are perfect for caching at the edge.

Next, cache your static assets—CSS, JavaScript, fonts, and images—with long expiry times. Add versioning to filenames so the browser knows when to refresh.

Your goal is simple: reduce the number of roundtrips to the server and make sure repeat visits feel lightning fast.

This small shift brings huge gains in load speed and user experience.

Compression (Brotli / GZIP):

Compression helps your site load faster by reducing the size of files before they're sent to users. Now, two main types are commonly used: GZIP and the newer Brotli. 

GZIP is widely supported, but Brotli gives better compression, especially for text-based files like HTML, CSS, and JS.

So, which one should you use? Simple—enable both. Your CDN or server will automatically pick the best based on the user's browser.

Just make sure compression is turned on in your CDN settings. That way, users get faster page loads, and you reduce bandwidth without changing a single line of code on your site.

Image Delivery Optimization:

Image Delivery Optimization is one of the easiest ways to speed up your SFCC site, and the results can be dramatic. Why? Because large, unoptimized images slow down your pages more than you realize—especially on mobile.

First, switch to next-gen formats like WebP or AVIF. They offer the same quality as JPEG or PNG but at a fraction of the size. Most CDNs can handle this automatically—just enable the setting, and you’re good.

Next, serve responsive images. Instead of loading one big image for every screen, use srcset to load different sizes depending on the device. This saves bandwidth and speeds up loading.

Finally, add loading="lazy" to images below the fold. It defers their loading until needed, keeping your initial page snappy.

Edge Rules and Smart Routing:

Edge rules and smart routing help your SFCC site respond faster by handling decisions at the CDN edge—before even hitting your backend. Think of it as setting smart instructions like forcing HTTPS, redirecting users based on their country, or serving different languages—all without backend logic.

You decide what’s worth running early. Want to block bad bots or send Indian users to a .in domain? Do it right at the edge.

This means faster decisions, fewer server calls, and smoother UX. It’s all about pushing logic closer to the user so your storefront stays quick, smart, and one step ahead.

TLS/SSL Optimization:

TLS/SSL optimization might sound intimidating, but it’s one of the easiest wins for speeding up your SFCC site while keeping it secure. You’re already using HTTPS—great—but have you ensured it's configured for performance, not just encryption?

Start by enabling TLS 1.3. It offers faster handshakes and reduced latency compared to older versions. Then, switch on HTTP/2 or HTTP/3 at your CDN. This allows multiple assets to load in parallel over a single connection, making your pages load quicker.

Also, offload SSL termination to the CDN. This means your edge server handles the SSL handshake instead of SFCC, which saves time and server effort.

Use a CDN-managed SSL certificate to avoid manual renewals and reduce maintenance risks. 

With just a few changes, you're not just securing your site—you’re also making it faster and more reliable.

Third-Party and Integration Management

Now that you know what’s slowing your SFCC site down, ask yourself—are these third-party tools truly helping your business, or are they just adding bloat?

It’s easy to get carried away with all the integrations, but without smart handling, they quietly wreck performance. 

So, before you plug anything into your storefront, think: is it critical for first paint or user interaction?

You’ve got the power to load scripts on your terms—delay them, manage them through GTM, or kick out the ones that no longer serve you.

By keeping things lean, async, and well-prioritized, your site not only loads faster but also feels smoother. And in the end, that’s exactly what users—and search engines—want.

Speed is the silent driver of better conversions. So, let’s talk further.

1. Asynchronous Loading of Third-Party Scripts

When you add third-party scripts to your SFCC site—like analytics, chat tools, or social proof widgets—they often load in a way that blocks your page from rendering quickly. This happens because these scripts are loaded synchronously by default, which means your browser has to finish loading them before it can show the rest of the page. That’s a big problem when you're aiming for fast load times.

So, what can you do instead? Load them asynchronously. This tells the browser, “Hey, don’t wait for this script—keep building the page.” It’s a simple switch: just add the async or defer attribute to your <script> tags.

Now, choosing between the two depends on the script’s purpose. Use async if the script doesn’t rely on anything else and doesn’t need to wait for the page to load. Use defer if the script should run after the HTML is fully parsed.

This small change can drastically improve your Time to First Paint and keep users from bouncing. Because no one likes staring at a blank screen while waiting for some pixel or widget to load.

2. Efficient Use of Tag Manager (e.g., Google Tag Manager - GTM)

When you use Google Tag Manager (GTM), it’s easy to get carried away adding tags for every tool—analytics, pixels, trackers, chatbots. But each tag you add increases the weight your site has to carry. And that slows things down.

So how do you keep GTM under control? Start by treating it like a high-performance car. You only take what you need for the road ahead. Audit your container regularly—remove tags you’re not using and pause the ones you’re testing.

Don’t fire every tag on every page. Instead, use custom triggers. Want to track scrolls or video plays? Fire those only when they happen. That way, the rest of your page loads faster and gets interactive quicker.

Also, delay tags that aren’t business-critical. Conversion pixels can wait a few seconds; speed can’t.

It’s all about control. GTM is powerful—but without smart management, it’s also one of the biggest reasons your site feels slow.

3. De-prioritize Non-Critical Integrations

Some third-party tools are nice to have, but not urgent for your site to load instantly. Think of chat widgets, ad pixels, heatmaps—they don’t need to show up the second the page starts loading, right?

That’s why it's smart to de-prioritize non-critical integrations. Instead of firing them immediately, let them load after the main content is visible and interactive. This way, users aren’t left waiting just because a chatbot script took too long.

Use a delay trigger—like after a user scrolls or spends a few seconds on the page. This gives the core experience priority and pushes extras to the background without removing them altogether.

Most tag managers allow you to set rules based on user behavior. Use that to control when less-important scripts kick in. It’s all about order—load what matters first, and let the rest follow quietly in the background.

This small shift alone can make your SFCC site feel snappier and smoother without sacrificing functionality.

4. Reduce Dependencies on Blocking APIs

Some of the biggest speed killers in SFCC sites are slow, blocking API calls—especially those used for real-time data like pricing, stock availability, or shipping rates. These calls delay page rendering because the browser waits for them to complete before showing content. So what can you do?

First, decide whether that data needs to be fetched upfront or if it can wait. If the answer is “it can wait,” defer the call until the user interacts—like selecting a size or ZIP code.

Second, always use fallback values. If an API is slow or fails, your site shouldn't hang. Show cached data or a default message.

And finally, cap API wait times. If a service doesn’t respond in 2–3 seconds, move on gracefully. Prioritize user experience over perfect data every time—that’s how you keep the site fast and usable.

5. Self-Hosting Critical Third-Party Assets

Some third-party assets are always needed—fonts, essential scripts, or stylesheets. So why let them slow your site down? Every time you call them from external URLs, the browser has to make extra DNS lookups and handshakes. That adds load time.

A better approach is to download and self-host those files directly in your SFCC static content folders. This keeps everything in your control and lets the browser fetch them faster—especially if you’ve already optimized your CDN and caching layers.

But don’t just blindly self-host everything. Choose assets that are critical to the initial render and don’t change frequently. Keep them updated occasionally, yes—but you’ll see fewer delays in first content paint.

It’s a simple shift, but the payoff in speed and consistency is big. Plus, it reduces reliance on third-party uptime, which can’t always be trusted.

6. Regular Integration Audits

Regular integration audits are your cleanup crew. Over time, your SFCC site collects tags, scripts, and connectors—some get outdated, others become unnecessary. These pile up and quietly drag down your site speed.

So, how do you fix it? Start by reviewing all third-party tools and scripts—ask yourself, “Is this still used?” If not, remove it. For the ones you do need, check if there's a faster or more efficient version.

Next, monitor how each integration affects load time. Use tools like Chrome DevTools or Lighthouse to see which scripts are slowing things down.

Keep this review on a regular schedule—quarterly is a good start. 

That way, your site stays lean, your speed stays high, and your user experience doesn’t suffer.

Mobile Optimization Techniques

When you're optimizing your SFCC site for mobile, the first thing you need to accept is this: most of your users are probably on their phones. So if your mobile experience lags, you’re already losing business. Let’s fix that.

Start by controlling your DOM size. A bloated page with hundreds of nested elements forces the browser to work overtime—especially on low-end phones. Keep your HTML lean and your component structure flat. Not only does it help rendering, but it also makes your layout more predictable.

Now, ever noticed how elements suddenly jump around while a page is loading? That's a layout shift. It happens when images or banners load without predefined dimensions. To prevent this, always set fixed heights and widths for images, carousels, and embedded content. You don’t want your “Add to Cart” button flying off-screen.

Now, let’s talk about touch. Make sure all interactive elements—like buttons and dropdowns—have enough spacing and size. If users have to zoom or fight fat-finger issues, you’re inviting frustration. Test these interactions on actual devices, not just in Chrome’s emulator.

And here’s a tip many overlook: minimize long animations or transitions on mobile. What feels smooth on a desktop can feel sluggish on a budget smartphone.

So, your job isn’t just to shrink the desktop version. It’s to rethink the mobile experience completely—design for speed, clarity, and control. Make every touch feel snappy and intentional.

DevOps and Deployment Considerations

When you're working on SFCC speed optimization, it's easy to overlook the role of DevOps and deployment. But here's the thing—you can write the cleanest code and implement every speed hack, yet still lose performance if your deployment pipeline is sloppy or misaligned with production behavior.

Start by setting up separate environments for staging and production, but make sure they truly mirror each other. Often, staging has fewer products, fewer integrations, or relaxed CDN rules—and then you’re shocked when production doesn’t perform the same. 

So, what’s the fix? Align them. Here’s a quick breakdown:

Once staging reflects reality, plug performance testing into your CI/CD pipeline. Automate Lighthouse audits and set “performance budgets” so builds fail if load times or TTFB exceed thresholds.

Finally, audit every new cartridge or third-party module before pushing to prod. SFCC deployments are complex, but with the right checks, you’ll always stay ahead of speed issues.

Ready to Boost Your Site Speed with Confidence?

Optimizing your SFCC site speed isn’t just a technical task—it’s a business move. Every extra second a page takes to load costs you conversions, frustrates users, and weakens your SEO.

So, what’s the best approach? Start by measuring real performance, fix backend bottlenecks, streamline your frontend, and make smart caching decisions. Then, test again.

It’s not about one-time fixes—it’s an ongoing cycle. Want a smarter way to stay on top of all this?

Try seorce.com — The SEO Platform Built for Scale, Speed & Precision. Track rankings, analyze backlinks, generate content, and fix SEO issues—all in one AI-powered tool.

FAQs

1. What slows down an SFCC site the most?

Heavy images, unoptimized JavaScript, too many API calls, and poor caching are top culprits. Also, unused cartridges or bloated templates can drag performance. Cleaning up these areas can give your site a real boost in speed.

2. Do SFRA sites need speed optimization too?

Yes, absolutely. SFRA gives a great structure, but it doesn’t magically make things fast. You still need to optimize code, manage scripts smartly, and tune caching. Think of SFRA as a solid base—but not the full build.

3. How often should I check my site speed?

At least once a month—or after every major update. New features, campaigns, or plugins can slow things down. Frequent checks help you catch issues early, before users or Google notice.

4. Can I optimize SFCC speed without changing code?

To some extent, yes. You can use CDNs, compress images, manage third-party scripts, and fine-tune caching. But for big gains, you'll need dev-level changes like refactoring controllers and trimming JS.

5. How can I test SFCC site speed properly?

Use Lighthouse, WebPageTest, or SFCC’s own Performance Center. Test on mobile and slow networks too, not just desktop. The key is to test real user flows—like homepage to checkout—to catch issues that matter most.