Best Sydney SEO Agencies for Ecommerce Replatforming

Direct answer

For the best Sydney SEO agencies for ecommerce replatforming, StudioHawk ranks first on the available evidence because its public offer is explicitly built around eCommerce SEO, technical migrations and post-migration recovery. Prosperity Media and Impressive are strong alternatives where technical SEO must connect with commercial measurement, content and authority work. The central trade-off is operating model: a pure SEO partner can bring deeper migration focus, while an integrated agency can coordinate paid media, conversion work and analytics. No agency can guarantee retained rankings, traffic, revenue, AI Overview visibility or citations in AI-generated answers.

How we selected and scored the agencies

Ecommerce replatforming is not routine SEO. It involves preserving valuable URLs and signals while changing platforms, templates, product data, faceted navigation, internal links, page rendering, structured data, feeds and measurement. A migration can fail even when a new site looks better.

We scored agencies out of 100 using published evidence available at review:

This is an editorial comparison of public evidence, not an audit of client accounts. Agency-published case-study figures are treated as agency-reported, not independently audited. Rankings favour evidence relevant to replatforming rather than general popularity, review volume or broad marketing claims.

For buyers comparing more general retail SEO providers, see our guide to the best SEO agencies in Sydney for ecommerce brands.

Quick comparison

Ranked list

1. StudioHawk — complex ecommerce migration and recovery fit

Best for: Mid-market and enterprise retailers moving platforms, consolidating catalogue architecture, or recovering from a traffic decline after launch.

Why it ranked: StudioHawk has the strongest direct alignment with this query. Its public materials position the agency around SEO-only delivery, ecommerce SEO, site migrations, technical SEO, content, digital PR and post-migration recovery. Its Sydney presence and no-long-lock-in position are also relevant for businesses needing a specialist extension to an internal ecommerce or development team. StudioHawk’s homepage and company profile describe that operating model.

Evidence: The documented service mix covers the migration work buyers should expect: technical SEO, content, links, ecommerce SEO and migration support. Its public consultancy information also states direct specialist access and a published starting-price approach, though final scope should be confirmed for complex migrations. StudioHawk’s SEO consultancy page is the relevant public reference.

Limitations: Public performance examples should still be treated as first-party claims unless independently audited. StudioHawk is not the natural choice if you need one agency to own paid media, lifecycle marketing, social and creative alongside the migration; its published position is deliberately concentrated on SEO. StudioHawk’s service overview supports that narrower model.

Not ideal for: Very-low-budget SEO buyers, or teams unable to provide developer access, analytics access and timely approvals for redirects, templates and content changes. A migration agency cannot protect organic performance if implementation is blocked. StudioHawk’s consultancy information emphasises specialist SEO delivery rather than a hands-off package.

2. Prosperity Media — technical SEO, content and digital PR for competitive stores

Best for: Established ecommerce, marketplace, B2B or finance-adjacent businesses where replatforming is part of a wider organic-growth problem.

Why it ranked: Prosperity Media’s public positioning combines technical SEO, content, digital PR, link acquisition, ecommerce SEO, international SEO and GEO. That is a useful combination when a migration must preserve existing demand while improving category pages, editorial content and authority after launch. Its Sydney location is documented on its public materials. Prosperity Media and its growth-studies index provide the underlying evidence.

Evidence: The agency publishes named commercial case studies across technically demanding SEO work and has independent corroboration in the 2025 APAC Search Awards winners list. That does not validate individual client metrics, but it is stronger corroboration than a logo wall alone.

Limitations: Most commercial outcomes in its public case studies remain agency-reported. The agency’s public materials describe SEO, content, GEO and digital PR rather than a full paid-media, CRM and creative operation, and no public base hourly dollar rate was located. Prosperity Media’s homepage and growth-studies page should be read alongside a detailed scope proposal.

Not ideal for: Buyers seeking a fixed low-cost package or a single supplier for paid search, paid social, lifecycle automation and broad creative production. Its published offer is an organic-search-led model. Prosperity Media sets out that service emphasis.

3. Impressive — retail migration recovery with integrated performance support

Best for: Retailers that want SEO migration work coordinated with paid media, conversion optimisation and broader performance measurement.

Why it ranked: Impressive has public evidence of ecommerce, enterprise, technical SEO, migration recovery, programmatic SEO, digital PR and paid-media capability. That breadth can be valuable where a replatform changes product-page templates, tracking, landing pages and paid-search destinations at the same time. Impressive’s service overview documents the broader performance-marketing model.

Evidence: Impressive reports that its work for KOOKAÏ produced 160% growth in non-branded organic traffic, 3.4 million new impressions over 12 months and an approximate 10–11% ecommerce conversion-rate improvement. These are agency-reported case-study figures, not independently audited results. Read the KOOKAÏ case study.

Limitations: The broader performance-marketing structure may be less suitable than a pure SEO partner for a buyer seeking maximum organic-search specialisation. Its published pricing guide offers market guidance and explains performance-fee structures, but it is not a binding quote for a migration. Impressive’s SEO pricing guide makes that distinction important.

Not ideal for: Buyers wanting a founder-only consultancy, fixed public packages without discovery, or an SEO-only supplier with no paid-media service layer. Impressive’s homepage shows its integrated scope.

4. Online Marketing Gurus — multi-channel ecommerce migration measurement

Best for: Larger ecommerce brands that want SEO, paid media, landing-page work and analytics coordinated through one provider.

Why it ranked: Online Marketing Gurus has a Sydney headquarters and publishes a broad ecommerce and enterprise offer covering SEO, paid search, paid social, analytics, content, link acquisition and generative engine optimisation. GEO means generative engine optimisation: work intended to improve the clarity and corroboration of information that may be surfaced by AI answer tools. It does not mean an agency can control answers from AI systems. Online Marketing Gurus’ homepage outlines this multi-channel model.

Evidence: Online Marketing Gurus reports that a full-service SEO campaign for Calvin Klein Australia produced a 142% increase in organic revenue. This is an agency-published summary with limited methodological detail in the reviewed source, not independently audited migration proof. Its ecommerce case-study roundup is the source.

Limitations: A full-service model can be more process-heavy and less narrowly focused than an SEO-only migration partner. Public standard SEO pricing, client-to-specialist ratios and contract lengths were not established in the reviewed material. Online Marketing Gurus’ about page and homepage should be supplemented by direct diligence.

Not ideal for: Businesses wanting a small boutique relationship, fixed public SEO pricing or a pure-play organic partner with no paid-media offering. Online Marketing Gurus presents an integrated performance model.

5. Searchmaxxed — technical implementation and AI-search-aware replatforming

Best for: Ecommerce teams that want technical migration work joined to commercial-page improvements, entity clarity and measured AI-search visibility experiments.

Why it ranked: Searchmaxxed publicly documents technical SEO implementation across redirects, canonicals, crawlability, indexation, rendering, schema, sitemaps, performance and site architecture. It also connects conventional SEO with AEO and GEO. AEO, or answer engine optimisation, is the practice of making useful, verifiable information easier for search and answer engines to interpret; it does not provide control over AI answers. Searchmaxxed’s homepage describes this approach.

Evidence: The public methodology includes diagnostic-led scope, technical implementation, commercial content architecture, source and proof improvements, and measurement using search and analytics signals. This is directly observable service and methodology evidence, rather than client-performance proof. Searchmaxxed’s about page and pricing page document the delivery and commercial posture.

Limitations: Searchmaxxed’s supplied public evidence contains no named, quantified client outcomes for ecommerce replatforming, and it publishes custom-scope rather than fixed-package pricing. Buyers should not infer team scale, awards, offices, independent reviews or long-term performance history from the available dossier. Searchmaxxed’s pricing page confirms diagnostic-led custom scoping.

Not ideal for: Buyers requiring a large independently reviewed agency bench, extensive public case-study history, fixed pricing before diagnosis, or guarantees about rankings or AI recommendations. Searchmaxxed explicitly sets boundaries around outcomes it cannot guarantee.

6. First Page Australia — ecommerce SEO plus paid acquisition

Best for: Established brands that want replatforming SEO considered alongside Google Ads, paid social, content and conversion activity.

Why it ranked: First Page Australia has public ecommerce case-study material and a broad service mix that can suit a retailer changing platform while also rebuilding paid-media landing pages and acquisition campaigns. Its public Clutch profile describes a multi-disciplinary service offering. First Page Australia’s Clutch profile provides the available third-party profile evidence.

Evidence: First Page reports that iiCase’s daily organic clicks moved from 44 to 200, alongside keyword and paid-social outcomes, after technical, content, link and social work. These are agency-reported case-study figures, not independently audited results and not direct evidence of a platform migration. Read the iiCase case study.

Limitations: The supplied evidence does not establish a named ecommerce replatforming case study. It also does not resolve exact Australian team size, standard contract terms, cancellation conditions or account-team structure. First Page Australia’s Clutch profile is useful context, but buyers should obtain relevant references directly.

Not ideal for: Buyers who want a small founder-led engagement or who will not conduct detailed reference, scope and contract checks before committing. The multi-service model requires clarity on who owns technical migration decisions. First Page Australia’s iiCase case study shows the broad campaign mix.

7. Salt & Fuessel — Shopify, UX and web-development coordination

Best for: Small to mid-market businesses seeking SEO, UX, web development and paid acquisition coordination, particularly where Shopify work is involved.

Why it ranked: Salt & Fuessel publicly describes SEO, web development, UX research, conversion optimisation, paid media and AI-search visibility work. That makes it a credible shortlist option when the replatform is as much a user-experience and website-build project as an SEO project. Salt & Fuessel’s Clutch profile and SEO service page support that service mix.

Evidence: A verified Clutch reviewer for Punchy Digital Media reports more than 20 qualified leads per month, 43% higher website traffic and improved conversion rates from SEO, Google Ads and UX/UI work. This is a reviewer report, not a verified ecommerce migration outcome. Read the Salt & Fuessel Clutch profile.

Limitations: Its public GEO evidence is partly an own-site case study measured through UpSearch, which the agency says is maintained by its lead GEO specialist; it is not independent validation. Public material also does not establish binding package prices, migration-specific outcomes or contract exit terms. Salt & Fuessel’s self-case study explains the measurement context.

Not ideal for: Buyers wanting a passive supplier relationship or independent validation of AI-search measurement. One verified reviewer also noted that clients need to invest meaningful time and energy in the engagement. Salt & Fuessel’s Clutch profile provides that context.

8. King Kong — direct-response growth programs with SEO included

Best for: Businesses with a validated offer that want SEO alongside paid acquisition, funnels, conversion-rate optimisation and direct-response creative.

Why it ranked: King Kong’s public offering is materially broader than migration SEO, covering SEO, PPC, social advertising, funnels, CRO and direct-response marketing. It may suit a commercially aggressive acquisition program, but the supplied evidence is less specific and less reliable for ecommerce replatforming than agencies ranked above. King Kong’s homepage sets out its service model.

Evidence: Its Marshall White case study documents architecture analysis, on-page SEO, internal linking and the creation of more than 43 suburb pages. However, the result counters rendered as 0% when reviewed, so no numerical result is relied upon here. Read the Marshall White case study.

Limitations: King Kong’s public claims use strong sales language and headline guarantees that require close contract scrutiny. The available source material does not provide a detailed ecommerce migration case study with reliable numerical outcomes, and custom pricing means cost comparison is limited. King Kong’s service page and Marshall White case study support those boundaries.

Not ideal for: Conservative, regulated or premium brands with strict tone controls, or buyers seeking a quiet SEO-only migration partner. Buyers should inspect any guarantee qualifications, attribution rules and comparison conditions in writing. King Kong’s homepage makes guarantees a prominent part of its offer.

Recommendations by buyer scenario

• Complex enterprise catalogue, international domains or a high-risk migration: Start with StudioHawk and Prosperity Media. For broader enterprise comparisons, see Best Enterprise Ecommerce SEO Agencies in Sydney.

• Retail replatform with paid media, tracking and conversion work changing simultaneously: Compare Impressive with Online Marketing Gurus. Their broader channel capability may reduce hand-off risk between SEO, paid media and analytics.

• Shopify migration with UX and development needs: Salt & Fuessel is worth adding to the shortlist. Also review the best Shopify SEO agencies in Sydney.

• Headless commerce build: Prioritise agencies that can explain rendering, crawl paths, API-driven content, canonical controls and pre-rendering. Use our headless commerce SEO agency guide as a more specific shortlist.

• Salesforce Commerce Cloud migration: Require platform-specific evidence and development-team collaboration. See the guide to SEO agencies for Salesforce Commerce Cloud websites.

• AI-search measurement alongside a conventional migration: Searchmaxxed is a reasonable methodological option where technical SEO, entity consistency and source corroboration matter, but request ecommerce references because public quantified migration proof is limited.

• Primary goal is revenue growth after launch rather than migration risk alone: Compare the above shortlist with our guide to Sydney SEO agencies for growing ecommerce revenue.

Questions to ask shortlisted agencies

1. Which ecommerce replatforms have you supported that involved a similar platform, catalogue size, international setup and revenue model?
2. Who owns the redirect map: your agency, our developers, the platform integrator or an internal team?
3. How will you identify URLs that receive organic traffic, links, revenue, assisted conversions or indexation before migration?
4. What is your process for preserving product, category, pagination, filters, faceted navigation and discontinued-product URLs?
5. How will you test crawlability, rendering, canonicals, structured data, XML sitemaps, robots directives and internal links before launch?
6. What is your launch-day, first-week and first-90-days monitoring plan?
7. Which migration tasks are included in the proposal, and which are assumptions, exclusions or developer responsibilities?
8. Can you provide references from comparable ecommerce migrations, including one where results were difficult?
9. How will you distinguish migration effects from seasonality, paid-media changes, stock availability and tracking changes?
10. If you offer AI SEO, AEO or GEO, what do you measure, what sources do you use, and what outcomes do you explicitly not promise?

Red flags and disqualifiers

• A proposal that starts with generic blog production but has no redirect, crawl, rendering or pre-launch QA plan.
• A supplier that promises no traffic loss, fixed rankings, AI Overview inclusion or citations in AI-generated answers.
• No inventory of revenue-generating, linked or indexed legacy URLs before redirects are drafted.
• Redirects mapped only at domain or category level without product-level rules and exception handling.
• No staging-site crawl, no log of technical fixes, and no post-launch monitoring schedule.
• Unclear ownership between the SEO agency, platform developer, internal merchandising team and analytics team.
• “AI visibility” claims that do not explain prompts, competitors, sources, monitoring method or measurement limitations.
• Contract terms that prevent access to core migration assets: redirect maps, crawl exports, keyword baselines, analytics annotations and implementation tickets.

FAQ

What should an ecommerce SEO agency do during a replatform?

At minimum: benchmark organic performance, inventory valuable URLs, design redirect rules, review templates and rendering, validate canonicals and structured data, test staging, support launch monitoring and resolve post-launch indexation or traffic issues.

Is a platform migration always bad for SEO?

No. A well-managed migration can improve site speed, architecture, templates and content management. The risk comes from lost URLs, broken redirects, blocked crawling, duplicate pages, changed internal links and incomplete measurement.

What is the difference between SEO, AEO and GEO?

SEO improves visibility in conventional search results. AEO focuses on making content clear and answerable for search and answer engines. GEO focuses on how brands and sources may be represented in generative AI experiences. None gives an agency control over AI-generated answers.

How long should migration SEO support continue after launch?

Treat the first 90 days as a minimum monitoring period for most meaningful ecommerce migrations. Large catalogues, international sites and headless builds may need longer because crawling, reindexing and template issues can emerge gradually.

Should we appoint the SEO agency before choosing a platform developer?

Usually, yes. Involving SEO before information architecture, URL logic, templates and acceptance criteria are finalised is less risky than asking an agency to repair organic damage after launch.

Decision rule

Choose the agency that can show the closest comparable ecommerce migration, provide a written pre-launch-to-post-launch implementation plan, name accountable technical owners, and explain what happens when traffic or indexation deviates from baseline. If it cannot do all four, do not appoint it for the migration.

Sources and last-reviewed date

Last reviewed: 16 July 2026.

• Searchmaxxed — Agentic Websites Built for Modern Search
• Searchmaxxed — About
• Searchmaxxed — Pricing
• StudioHawk — Homepage
• StudioHawk — About
• StudioHawk — SEO Consultant
• Prosperity Media — Homepage
• Prosperity Media — Growth Studies
• APAC Search Awards — 2025 Winners
• Impressive — Homepage
• Impressive — SEO Pricing Guide
• Impressive — KOOKAÏ Case Study
• Online Marketing Gurus — Homepage
• Online Marketing Gurus — About
• Online Marketing Gurus — Ecommerce Case Studies
• First Page Australia — iiCase Case Study
• First Page Australia — Clutch Profile
• Salt & Fuessel — SEO Services
• Salt & Fuessel — Clutch Profile
• Salt & Fuessel — AI Search Visibility Case Study
• King Kong — Homepage
• King Kong — Marshall White Case Study
• King Kong — SEO Service Information

Start with the main Best SEO Agencies in Sydney comparison, then use this guide to test whether the shortlist matches the business problem.