Replatforming to Shopify Plus: Timeline, Costs, and What to Expect

Replatforming your ecommerce store is one of the most high-stakes technology decisions you can make. Done well, it unlocks growth, lowers costs and prepares your brand for the future. Done poorly, it can disrupt revenue, lower SEO rankings, and result in months of remediation work that takes resources away from growth efforts.

This article sets some realistic expectations for how you should think of this Shopify Plus migration cost, how long it takes, what you need to be planning for the whole way through, and what steps matter most in setting up your organization for success.

Timeline Expectations by Migration Type

The timing of a Shopify Plus migration is contingent on how complex your current store is, how many integrations exist and the extent of updates you wish to make in that time. A same-to-same migration from a SaaS platform, such as BigCommerce, will normally take 8-14 weeks. A migration from a self-hosted solution, such as Magento, generally requires 14-24 weeks because of the added complexity brought by data migration, URL mapping and integration rebuilds. A complex enterprise migration that includes a lot of integrations, more than one storefront or some big design changes can take 20-32 weeks.

These timelines also presume a reasonably proficient agency partner and satisfactory client completion times i.e. feedback on designs is given in a timely fashion, approvals are passed through promptly for milestone deliverables and the CLIENT makes themselves available when meetings are scheduled. I have witnessed projects that were doubled in time because of a delay on the client’s side or mid-project feature creep, and underestimated integration complexity. Establish internal expectations early, assign a project owner on your end and safeguard that person’s time to dedicate solely to the migration.

Build buffer into your timeline. Unexpected obstacles arise on even the best-planned of migrations – whether it’s a non-documented Magento customisation, a subsequent integration that was not functioning correctly in Shopify’s environment, or an issue while transferring data which necessitates an additional round of testing. Building in two to four weeks of buffer to your initial estimate is good risk management.

Cost Breakdown

Migration costs are all over the map, but here’s a — realistic and billable — range based on my experience across more than 30 migrations. Platform subscription: Shopify Plus from $2,300 per month. Design and development: $50,000 to $200,000 depending on complexity of the scope and if you’re simply doing like-for-like migration or using it as an opportunity to redesign as well. Data migration: $5,000 to $30,000 How much you can save: Depends entirely on data volume and complexity. SEO migration: $5,000 to $15,000 for sufficient redirect mapping and validation. Integration rebuilds: $10,000 to $50,000, depending on how many and how complex your integrations are with ERPs, PIMs and other systems.

The overall scope of the project for a mid-market migration is usually in the $80,000 to $200,000 range. Enterprise migrations can cost upwards of $300k, especially when dealing with numerous storefronts, intricate B2B functionality, and/or extensive design renovations. Using a professional Magento to Shopify migration service allows you to control costs by steering clear of the costly pitfalls leading to budget overages: unidentified customizations, half finished data mapping and forgotten redirect needs.

Invest in thorough discovery upfront. Invest in an aggressive discovery phase plan (10,000-20,000) and save money because with a full budget in place you will uncover many of your scope / risk / dependencies that would have potentially cost millions to fix in market.

The Migration Process Step by Step

An ordered migration has a certain process to it. Discovery and audit: two to four weeks to log every customisation, integration, and data dependency that you have on your current platform. Design and architecture: 3-6 weeks to design the Shopify Plus store, as well as technical architecture planning, integration design, and data migration strategy. Development: Four to 10 weeks to design and construct the store, move data and set up integrations. Testing and QA: 2 – 4 weeks for regression testing, data validation, integration testing, performance testing and user acceptance testing. Pre-launch: 1-2 weeks of preps for the last sync of data, applying redirects and planning DNS cutover. Go-live and monitoring: 1-2 weeks for cutover, go-live monitoring, and real time issue resolution.

More time should also be given to the testing phase than most brands initially invest. Hasty QA is the number one reason for post-launch issues – broken integrations, missing product data, bad redirects or simply forgotten portals. Allot a minimum of two full weeks for thorough testing that encompasses two full test data migrations that validate each and every dot of data as well all redirects.

Post-Migration: The First 90 Days

The first 90 days after migration is make or break. Day 1–14 Daily check your analytics for traffic drops, conversion rate changes and pages that are broken or have an integration failure. Keep your agency on call for quick issue fixes and ensure there is a clear escalation process for urgent issues.

For 2-4 weeks, majority of the brands notice a slight decline in organic traffic as google reprocesses redirects and reindexed pages. A translator should stammer, if ever he has to interpret in this way; and his stuttering ought to be a normal one, which is usually overcome only after thirty or sixty days. If you are either redirected and traffic fails to come back or not redirected and indexation doesn’t recover by day 60, then check your redirects implementation and indexation even further as redirections could be wrong just as canonicalization.

On the flip side, the majority of brands see increases in their conversion rates within 30 days, bolstered by Shopify’s performance enhancements including more robust page speed offerings, an optimized checkout flow and the Shop Pay accelerated checkout. The net revenue impact, while nominal during the organic traffic recovery phase, remains positive as the uplift in conversion outweighs the losses incurred due to a small dip in traffic.

Leverage your first 90 days to establish benchmarks for performance that will allow you to form an optimization posture. Have you been documenting the conversion rate per device type and traffic source, average page speed metrics, checkout completion rates or customer satisfaction scores? These baselines will serve as a starting point for continuous improvement efforts that should commence directly after the stabilization period of migration.

Final Recommendations

If you’re in the process of deciding the best approach or partner to migrate to Shopify Plus, we cannot stress enough how much you should invest into planning. Brands that give enough time and budget to the search, documentation of requirements, and selection itself get much better results than those which try to get started as quickly as possible. A well planned migration that takes 20 weeks will always deliver better results than a badly planned rush job of 12 weeks, because the up front investment in planning means there’s none of the rework, scope creep and post-launch issues we see with under scoped projects.