Ecommerce Advertising Strategy: Meta, Google, TikTok in One Framework

The Problem With Channel-Specific Thinking

Most ecommerce brands run their advertising like separate businesses. Meta ads team treats Meta like an island. Google Ads team treats Google like an island. TikTok is "nice to have" or "experimental."

Result: duplicate efforts, conflicting targeting, creative that works brilliantly on one platform gets lazily copy-pasted to another where it bombs.

The fix isn't to hire more people. It's to stop thinking in channels.

When you run Meta, Google, and TikTok through the same strategic framework, something shifts. You stop asking "how do I succeed on this platform" and start asking "where does this customer sit in the funnel, and which platform reaches them best at that moment." The channels become tools, not goals.

This is the framework we use internally at Ecom Republic to manage full-funnel campaigns across all three platforms simultaneously. It's not about knowing everything about each platform. It's about knowing what matters.

The Three-Layer Framework: Awareness, Conversion, Retention

Every ecommerce purchase follows a funnel. And every platform plays a different role in that funnel.

Think of it this way: a customer doesn't wake up knowing they need your product. They discover you. They research you. They convince themselves. Then they buy. Then you keep them.

Each of these moments is an advertising moment. And each platform is strongest at a specific layer.

Layer 1 — Awareness: TikTok & Meta (top of funnel)

TikTok is the discovery engine. It's where customers don't yet know they want your product but are infinitely scroll-able and endlessly influenced by creators they trust. TikTok's algorithm doesn't care about your targeting precision. It cares about engagement, watch time, and shares. If your ad hook is compelling enough to stop the thumb, TikTok will show it to someone with a credit card.

Meta (Facebook and Instagram) sits between discovery and consideration. It's better at targeting precision than TikTok but better at scale than Google. If someone's in a relevant interest space (e.g., fitness, beauty, fashion), Meta can reach them efficiently.

Layer 2 — Conversion: Google (middle/bottom of funnel)

Google exists in the research moment. Someone has already decided they need a solution. Now they're comparing. They're reading reviews. They're price-checking. Google Ads capture them at the exact moment they're ready to compare and buy.

Google Shopping ads are the killer here. They sit at the bottom of the funnel where purchase intent is highest. Someone searching "luxury leather handbag" on Google isn't curious. They're ready to pull the trigger.

Meta can do bottom-funnel too, but Google is specialized in it.

Layer 3 — Retention: Meta & Google (post-purchase)

Once someone buys, they're in a new funnel. Can you sell them again? Can you increase their lifetime value? Can you turn them into repeat customers or subscribers?

Meta excels at email list and customer audience retargeting. Google excels at search retargeting (someone visits your store, leaves, then searches for you later — boom, Google ad).

Together, they own the post-purchase game.

How This Changes Your Strategy

Once you accept that each platform is strongest in different parts of the funnel, the math becomes simple.

Don't spend $10k on Meta if you haven't locked in Google Shopping. Google Shopping will convert discovery into cash. Meta without a Google layer underneath is awareness spend without the funnel to capture it.

Don't spend $5k on Google Shopping if your ads aren't high-converting. Google finds ready-to-buy customers. If your product page is slow, your shipping is expensive, or your creative doesn't address a core objection, Google will accelerate your losses.

Don't ignore TikTok just because "our customers aren't on TikTok." If your customer is under 40, they're on TikTok. They might not be searching Google for your product. But they'll stop scrolling for the right hook.

The framework answers a strategic question before you spend a single dollar: "Which part of the funnel is broken right now?"

If your account has no awareness, you're losing to smaller competitors who are. Start with TikTok creative testing. Cheap traffic, big reach, fast feedback.

If awareness is solid but conversion is tanking, you're not capturing the traffic you're generating. Build Google Shopping. Add search retargeting. Plug the leaks before spending more on top-of-funnel.

If you're converting fine but not seeing repeat purchases, your retention game is weak. Shift budget from acquisition to email and retargeting.

The Campaign Architecture That Supports This

Let's get tactical. Here's how the three platforms sit inside one account structure:

Meta: Full-Funnel Awareness & Retargeting

Create three Meta ad sets, each aligned to one awareness stage:

1. Unaware (Broad Reach) — Lookalike audiences or interest-based targeting with broad keywords. Goal: reach someone who fits your customer profile but hasn't found you yet. Budget: 30-40% of Meta spend.

2. Problem Aware (Intent) — Audience-building (e.g., people who engage with fitness content, or visit competitor websites). Goal: reach someone who's looking for a solution but hasn't found yours yet. Budget: 30-40% of Meta spend.

3. Solution Aware + Retargeting — Website visitors, add-to-cart events, email list, and past purchasers. Goal: convert hot audiences. Budget: 20-30% of Meta spend.

Test creative ruthlessly in the awareness sets. When a hook hits, graduate it to conversion sets.

Google: Owned Intent + Shopping

Split Google into two core campaigns:

1. Shopping Ads — Live product feed showing exact inventory, price, and reviews. Show only products that are profitable to sell. Most platforms waste 40% of budget on unprofitable SKUs. Google Shopping forces you to be surgical about it. Budget: 50-60% of Google spend if you have strong product margins.

2. Search Retargeting — Bidding on your brand + product names for people who've visited you before. Cheap, high-converting traffic. Budget: 10-20% of Google spend.

The rest of Google spend (if applicable) goes to category-level search (e.g., "luxury leather bags") only if you're ranking in top 3 organic for it already. Otherwise, you're paying for discovery on a channel with lower intent than Meta.

TikTok: Discovery + Trend Velocity

TikTok is simpler operationally because TikTok's algorithm does the heavy lifting. You focus on creative, not targeting.

Run these campaign types:

1. Standard Campaigns (Organic Creators) — UGC-style ads from creators in your niche. TikTok's algorithm will find the audience. Budget: 50-70% of TikTok spend. Lowest cost-per-view, highest variability in results.

2. Branded Hashtag Challenges — Encourage user-generated content. This is brand building + word-of-mouth advertising. Budget: 10-20% of TikTok spend.

3. Retargeting — Website visitors and email list. Much smaller pool than Meta or Google, but super high-intent on TikTok. Budget: 10-20% of TikTok spend.

Note: TikTok's targeting precision is weak compared to Meta and Google. Work with audience size (broader = better on TikTok). The algorithm does the sorting.

Case Studies: What This Looks Like In Practice

Fashion Brand — $40k/month Ad Spend, Goal: Hit $100k Revenue

This brand was spending $25k on Meta, $10k on Google, $5k on TikTok. Uneven distribution. Meta was driving awareness but conversion was poor. Google was solid on brand terms only. TikTok was unmeasured.

Diagnostic: Awareness traffic wasn't feeding Google's bottom-funnel strength. Google couldn't capture it because nobody was searching the brand yet. And TikTok was getting people interested but no mechanisms existed to push them toward conversion.

Fix: Rebalanced to $18k Meta (awareness + retargeting), $16k Google (Shopping + brand search), $6k TikTok (UGC creator partnerships).

Result: Conversion rate climbed 23%. Not because of channel secret sauce. Because the funnel actually captured customers. Meta drove 2.8x MER, Google drove 4.1x MER on Shopping, TikTok drove 1.8x MER but brought new audience segments into the funnel.

Subscription Brand — $80k/month Ad Spend, Challenge: Subscription ROAS Is Always Lower

Subscription brands are harder because customer acquisition is front-loaded but revenue is spread across months. Standard ROAS math looks bad.

This brand was stuck. They had $3 ROAS on first purchase. But repeat rate was only 15%. Lifetime value wasn't covering acquisition cost.

Diagnostic: Everything was acquisition-focused. Awareness + conversion pipeline was optimised. But retention was untouched.

Fix: Shifted 15% of budget ($12k) from awareness to post-purchase: email flows, retargeting audiences, subscriber community building. Left acquisition at $68k to maintain pipeline.

Result: Repeat rate climbed to 31% within two months. First-purchase ROAS stayed at $3, but second+ purchase rate was 2.4x MER, creating actual lifetime value. The business became sustainable.

Electronics Brand — $120k/month, Many SKUs, Low Margins

This brand was wasting 35% of Google spend on unprofitable products. Shopping ads were live, but inventory included slow-movers with 15% margins. Every sale was a loss.

Diagnostic: No funnel discipline. Was treating Google like a discovery channel instead of a profit channel.

Fix: Removed 120 SKUs from Shopping feed. Kept only top 80 products with 30%+ contribution margin. Cut Google spend in half. Redirected savings to Meta awareness to build pipeline for the profitable products.

Result: Google profitability jumped from 1.1x MER to 3.8x MER. Meta spend was higher, but margin per customer was higher too. Total bottom-line profit climbed 67%.

Why Most Brands Fail At This (And How Not To)

Mistake 1: Copying the same creative to every platform.

Meta creative works on Meta because it's native. A TikTok creator video shot vertically in a kitchen is infinite times more effective on TikTok than a horizontal product demo. A search ad with specific price/shipping messaging works on Google because someone's already comparing. That same ad on TikTok stops zero scrolls.

Test creative natively per platform. Different hooks, different formats, different messaging.

Mistake 2: Comparing metrics across platforms like they're equivalent.

You can't compare a TikTok "lead" to a Google Search conversion to a Meta add-to-cart. They're measuring different funnel moments.

Instead, measure funnel stage ROI: awareness cost-per-impression-on-right-audience, conversion cost-per-purchase by channel, retention repeat-rate and LTV. The metrics align to the funnel layer, not to the platform vanity metric.

Mistake 3: Overshooting one channel when another is underperforming.

If Google is weak, the answer isn't to triple Meta spend. The answer is to diagnose why Google is weak. Wrong products being shown? Shopping feed needs cleaning. No one searching your brand? Meta awareness is too cold. Ads not converting? Creative or product issue.

Fix the broken layer, don't overcompensate elsewhere.

Mistake 4: Ignoring LTV in channel allocation.

Some channels are cheap per click but awful for repeat customers. Some are expensive per click but bring your best customers. Don't kill the expensive channel just because the unit economics look worse. Calculate LTV impact.

We've seen Meta top-of-funnel that's "expensive" per first purchase but brings customers with 35% repeat rate. Meanwhile Google bottom-funnel is "efficient" per first purchase but repeat rate is 8%. The full-funnel picture is totally different.

The Funnel Question: Where Is Your Traffic Leaking?

Here's the diagnostic tool we use:

If awareness is high, conversion is low: Meta is full of clicks, but Google isn't converting them and people aren't buying. Fix: improve product page, test Google Shopping, reduce shipping friction.

If awareness is low, conversion is high: Your existing traffic converts incredibly well, but there's not enough of it. Fix: increase Meta + TikTok budgets, test new creative hooks.

If first-purchase ROI is strong, repeat rate is weak: Acquisition funnel is dialed, but customers don't come back. Fix: rebuild email flows, test post-purchase upsells, improve product quality.

If you're winning on brand search but losing on category search: Customers know you, but nobody new is finding you. Fix: increase top-of-funnel awareness (Meta/TikTok), consider content strategy for organic visibility.

These diagnoses point you to the exact layer to fix. Not guessing. Not spread-betting across all three channels equally. Precision.

Implementation: Your Next 30 Days

Week 1: Audit your current distribution. How much are you spending on each platform, and which funnel stage is it actually reaching? Most brands can't answer this.

Week 2: Map each campaign to a funnel layer. Awareness, conversion, retention. Be honest about what's working and what's a money pit.

Week 3: Rebalance budget based on your diagnosed weak point. If conversion is the blocker, shift dollars to Google Shopping. If retention is the blocker, shift to email + retargeting.

Week 4: Test creative specific to each platform. One month of native creative testing per channel will teach you more than six months of platform-agnostic ads.

Then measure. Not vanity metrics. Funnel metrics. Cost per customer acquired, repeat rate, LTV.

The One Number That Matters

If you're running Meta, Google, and TikTok together, there's one metric that ties everything together: Customer Acquisition Cost (CAC) vs. Lifetime Value (LTV).

It doesn't matter if Meta is "cheaper per click" if Google customers repeat 3x more often. It doesn't matter if TikTok has lower reach if those customers have higher margins.

The full-funnel framework only works if you measure it. Every week, track:

• CAC by channel

• Repeat purchase rate by channel

• LTV by channel (minimum 90 days of data for subscription brands)

When LTV grows faster than CAC, you've got a machine. Double down. When CAC grows faster than LTV, something broke. Diagnose which funnel layer is leaking and fix it.

This is how brands go from $50k/month to $200k/month. Not by working harder. By working smarter across all three platforms through one coherent funnel.

Book your Growth Diagnostic Call to talk through your current channel distribution and identify which funnel layer is your biggest blocker.