Imagine you’re the head of marketing at a $500-million retail company.
You’re 3 years into your legacy CRM contract. Your team files Jira tickets to pull segments. Basic personalization requires an SQL specialist. Your AI features make recommendations based on data that synced 24 hours ago. Everything you do requires an often slow and usually painful process.
Legacy platforms weren’t built for the fast-paced nature of B2C commerce, or the marketing and retention needs of enterprise brands. They were designed for a time when developers had to build everything, and they often expanded functionality through acquisitions of other companies. These cobbled-together systems create data silos and slow marketers down.
Modern retail brands need unified systems that update at the speed of their customers and can personalize millions of 1:1 relationships. Klaviyo B2C CRM is a single platform, built in-house for B2C companies, that combines marketing, customer service, and agentic AI in a built-in customer data platform (CDP).
Here, we walk you through the differences between Klaviyo and major legacy martech platforms so you can evaluate which is the right fit for your enterprise brand.
The architectural problem and financial cost of legacy suites
Enterprise buyers are frustrated with their legacy technology, and they’re seeking lighter and faster tools that make their jobs easier instead of harder.
According to Klaviyo’s 2026 B2C marketer research, the No. 1 martech priority for marketing decision-makers this year is expanding tech stacks with new AI-powered marketing tools, followed by upgrading ecommerce or CX infrastructure.
Two of the top 5 martech challenges, meanwhile, are having too many tools, which leads to complexity or inefficiency, and integrating tools and systems across the stack. And that’s a big problem, considering that 60% of B2C marketing teams have 6–15 tools in their marketing tech stacks, according to Klaviyo’s 2025 State of B2C Marketing Report.
The license fee of a legacy martech platform is just the software’s visible cost. Once you factor in the cost of developers, system administrators, system integrators, and the agencies you need to hire to manage them, your true payout is much higher.
Popular legacy martech platforms exacerbate these challenges.
Salesforce Marketing Cloud
Salesforce Marketing Cloud is a collection of acquisitions that were not designed to work together. Salesforce acquired cloud marketing platform ExactTarget in 2013 (which had itself acquired marketing automation platform Pardot just 8 months prior), data intelligence platform Datorama in 2018, and personalization platform Evergage in 2020.
Connecting systems like Engagement Cloud (engagement marketing tools), Data 360 (data platform), and Flow (low-code automation) requires data extensions and connectors that system administrators and specialists have to manage.
The platform’s complexity means marketing teams depend on their technical counterparts to do work. And according to Salesforce, 70% of implentations—which can take over a year for enterprises—benefit from partners, adding on another cost to consider.
See how Klaviyo compares to Salesforce Marketing Cloud.
Adobe Campaign
Adobe Campaign requires significant development work for advanced features. Brands also have to buy additional SKUs to access features like basic profile unification (Adobe CDP) and revenue attribution (Marketo Engage).
To use Adobe Campaign, your team may need professional services, technical set-ups, in-house developers, or external partners. Implementations can take anywhere from 6–18 months. This can slow time to value and increase your total cost of ownership.
That’s a big deal: our 2026 B2C marketer research found that high costs or unclear ROI is the No. 1 biggest martech challenge for marketers in 2026.
Klaviyo Enterprise | Salesforce Marketing Cloud | Adobe Campaign | |
Implementation time | 4–6 weeks | ||
Total cost of ownership | "This is a cost-friendly software. You can consider it above other softwares available in the market." | “The cost of deployment is very high, making it a significant investment.” | “Its cost is very high as it comes with Adobe Experience Cloud suite.” |
Data model | Built-in CDP | ||
Marketer ownership | “The platform itself is also very intuitive. Building campaigns and automated flows is straightforward, and the flow library gives you frameworks to work with so you can quickly customize for your brand.” “The flexibility of Klaviyo is great, allowing me to adjust it to my needs. I adore the drag-and-drop email design feature, which means I don't need a developer to design emails the way I want. The smart segmentation feature is another favorite of mine. Klaviyo makes my work easier and faster, saving me a lot of time. The initial set-up was very easy.” | “Requires a very high level of technical understanding.” | “A user who solely has marketing experience will have a hard time doing advanced things. It can be frustrating for these users to have to lean on a more technologically advanced user or even a developer or Adobe Professional Services.” |
AI capabilities | AI marketing agent, AI customer service agent, predictive analytics, AI photo editor, AI-powered channel affinity, AI-powered send times, and more | Agentforce Campaigns (generative AI) and AI Scoring (lead scoring) | Generative AI for copy and images, and AI-assisted data summaries |
Integration breadth | Full integration list not publicly available; Salesforce says, “For those that don’t have built-in integration, like on-premises data sources, you can purchase licenses of MuleSoft, work with our integration partners, or use apps on AgentExchange.” | Connects to other Adobe solutions, CRMs including Microsoft Dynamics 365 and Salesforce, and X | |
Migration support | Yes, through onboarding and account management | Yes, through Salesforce Professional Services | Yes, through solutions partners |
What Klaviyo’s architecture actually replaces
A single connected system not only replaces the kind of tool sprawl that causes integration and workflow headaches. It also saves enterprise brands real time and money.
Klaviyo, a single CRM with native solutions for data, marketing, customer service, analytics, and agentic AI, reduces friction for both marketers and customer service teams. Here’s what Klaviyo B2C CRM replaces:
- Customer data platform → Klaviyo Data Platform (KDP): KDP is the CDP built into Klaviyo that serves as the data infrastructure for all other functions, replacing standalone CDPs that legacy platforms require purchasing as separate SKUs. KDP supports unified customer profiles, lifetime data retention, real-time segmentation, identity resolution, and predictive analytics all in one place.
- Marketing automation platform → Klaviyo Marketing: In Klaviyo, you can run marketing across web forms, email, text messaging, WhatsApp, and mobile push, all from the same place. Flows and campaigns draw on live KDP data to power real-time personalization, without the need for a separate marketing platform.
- Customer service platform → Klaviyo Service: Customer service agents using Klaviyo Helpdesk share the same customer record as marketing teams using Klaviyo. That means service signals power marketing and vice versa, without needing to integrate a separate customer service platform to unify customer data.
- Analytics software → Klaviyo Analytics: Access customizable and pre-built reports and dashboards, product insights, customer buying behavior insights, review sentiment AI, and cohort analysis. Klaviyo Analytics works out of the box with all Klaviyo solutions—no separate analytics platform required.
- AI features → Klaviyo AI (K:AI): Klaviyo has built-in agentic AI for marketers and customer service teams, predictive analytics, channel affinity, and personalized send times. Klaviyo AI features are accessible directly to marketers, replacing the need for engineers and external partners.
Global consumer products company Helen of Troy migrated 3 brands in their home and outdoor division onto Klaviyo because using email and SMS together on their former provider required a prohibitive amount of developer support. The migration took just one month, reduced total cost of ownership by over 40%, and eliminated hundreds of IT tickets annually.
When Klaviyo is and isn’t the right fit
Klaviyo B2C CRM is purpose-built for B2C marketing, engagement, and retention. It’s the right fit for enterprise brands managing consumer relationships across email, text messaging, WhatsApp, and support. Brands that run omnichannel marketing and customer service programs, and need to deliver 1:1 personalization across millions of customer relationships, will benefit most from Klaviyo’s platform.
Klaviyo isn’t a good fit for businesses that need B2B sales pipeline management, complex field support operations management, or CPQ- or ERP-adjacent marketing automation. These requirements usually indicate that a company’s sales cycle is complex and involves multiple decision makers or multiple sales reps. Brands that sell to organizations rather than individuals will benefit more from martech built for account-level management.
What does enterprise CRM migration actually look like?
Switching platforms can be a slow and political process. Even if your current workflows feel limited or frustrating, the expense and disruption of migrating can seem even more daunting.
An enterprise CRM migration includes:
- Porting all of your customer data and analytics over to the new CRM and mapping all of your contact properties
- Syncing or rebuilding your content, like emails, text messages, sign-up forms, flows, or templates, starting with the highest-performing programs first
- Setting up any key integrations like your shipping software, returns management platform, or loyalty program
- Checking your deliverability and safely ramping up sending while maintaining inbox placement
- Creating new reporting dashboards
- Doing QA to make sure you’ve migrated over your data correctly and have everything you need for marketing, customer service, and analysis ready to go
- Optimizing your new set-up to create a scalable architecture for growth
Here are some of the factors that make migration feel risky, and how Klaviyo addresses that risk:
- Data continuity: A Klaviyo solution architect guides data extraction and subscriber model translation to make sure your data, feeds, and personalization logic are accurately replicated or improved in Klaviyo’s data model.
- Campaign continuity: A Klaviyo template consultant converts existing brand assets into reusable, Klaviyo-native templates, and a deliverability strategist designs a tailored warming strategy to prioritize audiences, scale sending safely, and maintain inbox placement.
- Operational continuity: We migrate your highest-impact programs first, and cut over in phases to protect deliverability. At every step of the way, we validate events and QA use cases to ensure baseline performance.
- Migration support: A Klaviyo implementation consultant acts as your dedicated project manager and primary point of contact. They own the end-to-end onboarding migration process, and they sequence workstreams, manage risk, and help ensure a controlled transition that protects performance and minimizes disruption.
- Security and governance: Klaviyo undergoes annual third-party audits to make sure internal controls are in accordance with industry standards like SOC2 and ISO 27001. These certifications mean that Klaviyo keeps your customers’ data confidential and secure.
Helen of Troy’s migration, which took just one month, is an example of how quickly enterprises can move from a legacy system to Klaviyo. Enterprise-scale migration takes real work, but Klaviyo’s migration strategy is structured, supported, and repeatable.
The real cost of staying with legacy martech
Every year you spend on a legacy platform that doesn’t serve your needs is another year of sync latency issues, SQL tickets, time spent waiting on a developer, and personalization engines running on yesterday’s data.
Over time, those sunk costs and opportunity costs add up. Eventually, it all translates to a real performance gap between your brand and those that have modernized their stacks.
A single, connected system like Klaviyo supports enterprise growth without the steep learning curve and overwhelming onboarding that come with many legacy platforms. Real-time customer data informs precise segmentation and smarter targeting to drive sales.
Klaviyo B2C CRM is the autonomous CRM that brings together real-time customer data, marketing automation, customer service, agentic AI, and analytics in one unified, enterprise-scale system.
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FAQs about Klaviyo enterprise CRM vs. alternatives
Should we choose Klaviyo or Salesforce Marketing Cloud?
Choose Klaviyo if you want to run your marketing and customer service from a single connected system, and you do not want developer or specialist overhead. Choose Salesforce Marketing Cloud if you want to customize every part of your martech instance, and you can support specialized admins, developers, and external agencies.
When is Klaviyo not the right fit?
Klaviyo is not the right fit for businesses that need B2B sales pipeline management, complex field support operations management, or CPQ- or ERP-adjacent marketing automation.
What are the pros and cons of Klaviyo for large B2C brands?
Pros: Klaviyo B2C CRM is purpose-built for B2C marketing, engagement, and retention. It supports enterprise omnichannel marketing and service programs by orchestrating email, SMS, WhatsApp, push notifications, and customer service from Klaviyo Data Platform, the built-in customer data platform included at no extra cost, which updates in real time and powers personalization for millions of 1:1 customer relationships. With Klaviyo, native agentic AI uses your customer data to remove the guesswork from forecasting, personalization, and optimization.
Cons: Klaviyo does not support B2B sales pipeline management, complex field support operations management, or CPQ- or ERP-adjacent marketing automation.
What's the ROI of switching from Salesforce Marketing Cloud to Klaviyo?
Exact ROI varies by company, but switching to Klaviyo may lower your total cost of ownership because it replaces multiple tools. Salesforce Marketing Cloud users say it requires technical expertise or dedicated consultants to use, and charges for add-ons like advanced reporting, personalization, segmentation, and data platform.
How long does it take to implement Klaviyo?
Experts suggest dedicating at least one month for Klaviyo migration, with the typical migration taking about 4–6 weeks. This varies based on how many contacts you have. Brands with 250,000+ subscribers should set aside 6–8 weeks to migrate to Klaviyo.
Is Klaviyo more affordable than Adobe Campaign?
Because Klaviyo is designed to be used out-of-the-box by marketers, and customers say it’s easy to implement, it’s typically more affordable than Adobe Campaign. Adobe Campaign requires specialized technical support, and charges for add-ons like profile unification and revenue attribution.
What does total cost of ownership look like with Klaviyo?
It depends, but because Klaviyo combines several capabilities in a single platform, switching can reduce total cost of ownership. Publicly traded company Helen of Troy, for example, reported 40%+ TCO savings after switching to Klaviyo.
Does Klaviyo require heavy developer resources?
No. Klaviyo is a no-code solution for non-technical users. You can extend its functionality with Klaviyo’s API and integrations, but Klaviyo is designed to be usable out-of-the-box.
What does a martech stack for a $500M retail brand include?
For enterprise retail brands, a martech stack can include a CDP, omnichannel marketing (website, email, text messaging, WhatsApp, push notifications) platform, customer service solution, analytics, and agentic AI capabilities. Klaviyo contains all these capabilities in a single, connected system.
If we want fewer tools but more personalization, what should we buy?
Klaviyo is a single, connected system that powers real-time personalization for millions of 1:1 customer relationships, based on a unified customer profile that captures every click, order, and chat.