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Modernize your cloud. Maximize business impact.
A fast-growing retail startup tried migrating its legacy order management system to the cloud, but midway through the move, they hit a wall. Key app dependencies weren’t mapped, some data was corrupted in transit, and the team lacked visibility into what had actually made it to the cloud. The result? Weeks of downtime, spiraling costs, and frustrated stakeholders.
Cases like this are common, especially when the right migration tools aren’t used from the start. With dozens of migration tools available, it’s easy to feel overwhelmed or unsure where to begin. The good news? AWS offers a flexible toolkit designed to help businesses when assessing readiness, moving applications, or modernizing after the cutover.
This blog unpacks the key AWS migration tools that SMBs should know, explaining what each tool does, when it’s most useful, and how to combine them for a smooth, cost-effective cloud transition.
Key takeaways:
- Use discovery tools first: Start with AWS Application Discovery Service and Migration Evaluator to map workloads and avoid missteps.
- Pick the right migration tool for the job: From lift-and-shift with AWS MGN to data replication with DMS, each tool fits a specific use case, so choose accordingly.
- Centralize tracking with Migration Hub: Avoid tool sprawl and confusion by monitoring all migration activity in one place.
- Secure and govern from day one: Set up IAM, AWS Config, and Control Tower early to establish compliance and cost boundaries.
- Cloudtech simplifies the journey: SMBs benefit from Cloudtech’s expertise to align tools with outcomes, reduce risk, and accelerate ROI.
Why do SMBs need migration tools during cloud transition?

Unlike enterprises with large IT teams and custom tooling, SMBs often operate with leaner teams and tighter budgets. This means there's less room for trial-and-error or costly delays. That’s why using AWS-native tools is essential. They automate discovery, reduce manual rework, and help SMBs migrate faster, with fewer surprises and lower risk.
Here’s why the right AWS migration tools make a difference:
- They reduce guesswork: Tools like AWS Application Discovery Service uncover what’s running, how it performs, and what’s connected, so things don’t break mid-migration.
- They optimize costs from day one: AWS Migration Evaluator and Compute Optimizer help right-size infrastructure before businesses launch it, preventing overspending.
- They minimize downtime: Tools like AWS MGN replicate servers in real time, allowing seamless cutovers without major disruptions to business operations.
- They reduce manual effort: For lean IT teams, automation matters. These tools eliminate the need for custom scripts or tedious reconfiguration tasks.
- They set a business up for the future: Tools like Control Tower and Migration Hub help implement governance, tagging, and accountability frameworks, making cloud management easier long after migration is done.
In short, AWS migration tools act as a SMB’s co-pilot, giving structure, visibility, and efficiency every step of the way. Without them, migration becomes a high-risk project with too many moving parts and not enough clarity.

Planning before moving: tools for discovery and budgeting

For SMBs, successful cloud migration starts with visibility. Without knowing what systems exist, how they perform, and what they cost to run, it's easy to overprovision or miss critical dependencies.
AWS tools like Application Discovery Service and Migration Evaluator help map infrastructure, analyze usage, and project TCO. Hence, SMBs can build a phased, cost-aware migration plan. It’s the difference between migrating with confidence and dealing with costly surprises later.
1. AWS Application Discovery Service
AWS Application Discovery Service (ADS) is a migration planning tool that automatically collects data from on-premises servers. It helps SMBs understand their current infrastructure before moving to the cloud, no manual spreadsheets required.
What it does: ADS gathers data like CPU, memory, disk, and network usage, and maps application dependencies across the environment. It creates a clear view of how systems interact and which workloads are underutilized or tightly coupled. This reduces the guesswork when right-sizing instances or planning sequencing.
When to use it: Use ADS at the start of the cloud migration journey. It’s a foundational step in the discovery phase, ideally before any infrastructure decisions are made, to avoid surprises and rework later.
Why it matters for SMBs: SMBs often lack the time or staffing to manually audit and map legacy systems. ADS accelerates discovery while reducing risk. It helps prevent common missteps like migrating a front-end app without its backend database or selecting EC2 instances that are far too large.
Example: A healthcare SMB uses ADS before migrating a patient scheduling system. The tool surfaces hidden connections to an old on-prem SQL Server used for reporting. This lets them re-architect the flow using Amazon RDS, avoiding a critical outage during cutover.
2. AWS Migration Evaluator
AWS Migration Evaluator is a free tool that provides data-driven insights and cost projections to help SMBs build a business case for cloud migration.
What it does: It analyzes the on-premises infrastructure (using data from AWS Application Discovery Service or manual input) and delivers a detailed report outlining projected AWS costs, usage patterns, and optimal instance sizing. It includes total cost of ownership (TCO) comparisons and right-sizing recommendations to help plan cloud resources efficiently.
When to use it: Migration Evaluator is best used after initial discovery, once the business has inventoried systems and dependencies. It’s particularly valuable when they need to justify migration to stakeholders or compare on-prem costs with projected AWS pricing.
Why it matters for SMBs: For SMBs with limited budgets and executive scrutiny, making a clear financial case is essential. Migration Evaluator translates technical data into business-friendly forecasts, helping SMBs avoid sticker shock and overprovisioning. It also ensures businesses aren’t moving unnecessary or outdated workloads.
Example: A retail SMB considering migration runs Migration Evaluator and finds that 40% of its workloads can be consolidated or replaced with AWS-managed services, cutting projected costs by nearly half. This enables them to secure leadership buy-in and start migration with clear ROI targets.

Minimizing disruptions during the move: tools for refactoring and rehosting

AWS offers purpose-built tools to help SMBs rehost (“lift and shift”) existing workloads with minimal changes, or refactor applications to take advantage of cloud-native benefits. These tools automate replication, manage cutovers, and ensure that application dependencies remain intact across environments.
Whether a SMB is moving legacy systems as-is or modernizing parts of the stack mid-migration, these services are designed to reduce risk, preserve uptime, and keep the business running smoothly during the transition.
3. AWS Application Migration Service (MGN)
AWS Application Migration Service (MGN) is a fully managed tool that automates the "lift-and-shift" migration of on-premises physical or virtual servers to Amazon EC2.
What it does: MGN continuously replicates source servers in real time to AWS, ensuring minimal data loss. It automates provisioning of Amazon EC2 instances based on the replicated environment and supports non-disruptive cutovers, making it easy to migrate production workloads without rewriting applications.
When to use it: MGN is ideal when rehosting legacy applications that don't require major architectural changes. It’s most useful for SMBs looking to move workloads quickly without the time or resources to refactor code.
Why it matters for SMBs: Many SMBs rely on aging infrastructure but lack the engineering bandwidth for complex replatforming. MGN simplifies migration by reducing manual effort, minimizing downtime, and preserving operational continuity, especially important for customer-facing or revenue-critical systems.
Example: A regional healthcare provider uses MGN to migrate its legacy EHR (Electronic Health Records) application to AWS over a weekend. Continuous replication ensures a seamless cutover, avoiding patient data loss and keeping clinic operations running on Monday morning without disruption.
4. AWS Database Migration Service (DMS)
AWS Database Migration Service (DMS) is a fully managed tool that helps move structured data from on-premises databases, cloud-based platforms, or between AWS services into Amazon RDS, Aurora, DynamoDB, or Redshift.
What it does: DMS supports both homogeneous (e.g., Oracle to Oracle) and heterogeneous (e.g., SQL Server to PostgreSQL) migrations. It enables continuous data replication with minimal downtime by using change data capture (CDC) for near real-time sync between source and target databases.
When to use it: Ideal during database modernization or migration projects, whether moving a legacy on-prem system to Amazon RDS, transitioning from commercial to open-source engines, or syncing databases across environments.
Why it matters for SMBs: For resource-constrained teams, DMS simplifies complex migrations that would otherwise require costly downtime or re-architecture. It’s especially useful when shifting to managed AWS databases that offer better scalability, availability, and cost-efficiency.
Example: A growing healthcare provider uses DMS to migrate from Microsoft SQL Server to Amazon Aurora PostgreSQL. The migration happens with near-zero downtime, allowing clinicians to continue accessing critical patient data throughout the transition without the cost of hiring specialized DBAs.
5. AWS DataSync
AWS DataSync is a fully managed data transfer service that automates and accelerates the movement of large datasets between on-premises storage systems and AWS services like Amazon S3, Amazon EFS, and Amazon FSx.
What it does: DataSync securely moves millions of files or petabytes of data at up to 10x faster than standard open-source tools. It handles encryption, network optimization, and data validation automatically, reducing the need for custom transfer scripts or manual uploads. It also supports recurring or scheduled transfers, ideal for ongoing synchronization.
When to use it: Best suited for SMBs that need to transfer bulk files for backup, disaster recovery, data lake ingestion, or hybrid workloads. Use it when migrating large media archives, shared file systems, or application backups to AWS.
Why it matters for SMBs: Instead of investing time and resources building complex transfer pipelines, SMBs can use DataSync to simplify and secure large-scale file transfers. It minimizes downtime and ensures data integrity during transitions.
Example: A regional media agency uses AWS DataSync to migrate 20 TB of video archives from on-prem NAS to Amazon S3. The automated, encrypted transfer saves weeks of manual effort and enables the agency to start building a searchable content library using S3 and Athena, without needing a dedicated IT team.
Making the cloud work for the business: cost and performance optimization tools

Once migration is complete, the real work begins, ensuring the cloud environment delivers measurable business value. For SMBs, this means keeping cloud costs under control, right-sizing resources, and maintaining high application performance without constant manual tuning.
AWS provides a suite of post-migration tools that help businesses monitor usage, analyze spend, optimize workloads, and track performance in real time. These services are built to surface inefficiencies early, whether it’s an underutilized Amazon EC2 instance or a storage tier mismatch, and guide actionable improvements based on actual data.
6. AWS Migration Hub
AWS Migration Hub is a centralized tracking and management service that provides visibility into the progress of application and infrastructure migrations across multiple AWS tools like AWS Application Migration Service (MGN), AWS Database Migration Service (DMS), and others.
What it does: Migration Hub consolidates migration status and metrics such as server inventory, migration wave planning, and progress tracking into a single dashboard. It helps coordinate multiple teams and tools in one place, reducing confusion and ensuring smoother execution.
When to use it: Use Migration Hub throughout the entire migration lifecycle, from initial discovery and planning to active migration and post-migration validation. It's especially useful when multiple workloads or teams are migrating in parallel.
Why it matters for SMBs: SMBs often run lean operations without full-time program managers. Migration Hub reduces guesswork by giving technical and business stakeholders a shared view of migration progress. It enables better coordination, clearer timelines, and fewer missed steps.
Example: An SMB in the healthcare sector uses Migration Hub to oversee the parallel migration of its EHR system via MGN and its reporting database via DMS. The unified dashboard helps their small IT team stay on top of both efforts without separate tracking tools, keeping the project on schedule and within budget.
7. AWS Control Tower
AWS Control Tower is a governance and automation tool that helps SMBs set up and manage a secure, multi-account AWS environment based on AWS best practices. It establishes a landing zone, or a pre-configured environment with built-in security, compliance, and cost controls.
What it does: Control Tower automates the creation of AWS accounts, applies guardrails (predefined policies), and enforces governance rules across the organization. It integrates services like AWS Organizations, AWS IAM, AWS Config, and CloudTrail to ensure consistent baselines for identity, auditing, and resource usage.
When to use it: Ideal post-migration or during early stages when setting up a long-term AWS foundation. Especially valuable when scaling from a single account to multiple business units or workloads.
Why it matters for SMBs: For growing SMBs, Control Tower eliminates the manual burden of setting up secure account structures and enforcing governance. It ensures that as the cloud footprint grows, SMBs are not left cleaning up compliance issues, cost overages, or inconsistent configurations down the road.
Example: An SMB expanding into new regions uses AWS Control Tower to spin up isolated accounts for each business unit while applying consistent tagging, billing, and security policies. This prevents resource sprawl and simplifies audit readiness from day one.

How does Cloudtech help SMBs make the most of AWS migration tools?
Cloudtech supports small and mid-sized businesses through every phase of migration, not just by executing the move, but by helping them use the right AWS tools at the right time. With a focus on minimizing risk and maximizing ROI, Cloudtech combines deep AWS expertise with an SMB-first mindset.
Here’s what SMBs gain by working with Cloudtech instead of going it alone:
- Clarity from the start: Cloudtech uses AWS tools like Application Discovery Service and Migration Evaluator to map systems, surface risks, and build a business-aligned roadmap, so SMBs don’t guess what to move or when.
- Smarter execution with the right tools: From AWS MGN and DMS to DataSync and Control Tower, Cloudtech matches tools to the workload, saving time, reducing errors, and avoiding over-engineered solutions.
- Cost and compliance baked in: Tagging, IAM, budgets, and guardrails are built into the migration, not added after. This helps SMBs stay secure, auditable, and on budget from day one.
- A foundation that scales: Beyond migration, Cloudtech sets SMBs up for long-term success with automation, analytics, and cloud-native design using services like Lambda, Athena, and Redshift.
With Cloudtech, migration is a strategic transformation grounded in AWS-native tooling and built for long-term success.

Wrapping up
AWS offers one of the most powerful toolkits for cloud migration, but tools alone aren’t enough. For SMBs, real success depends on knowing which ones to use, when to use them, and how to align them with business priorities. Without that clarity, migrations can become costly, complex, and disruptive. Missed dependencies, oversized infrastructure, or fragmented tracking often surface after the move, when fixes are harder and more expensive.
That’s why the smartest SMBs don’t just migrate. They plan with purpose, choose the right AWS-native tools, and execute with governance built in. Cloudtech helps make that possible. As an AWS Advanced Tier Partner focused on SMBs, Cloudtech brings the migration strategy, tool expertise, and built-in guardrails to move fast, without cutting corners. From discovery to cost control to post-migration optimization, Cloudtech helps ensure every step adds business value.
Thinking about migrating to AWS? Make every move count. Connect with Cloudtech.
FAQs
1. Do businesses need to use all AWS migration tools during cloud migration?
No. The right tools depend on specific workloads, goals, and migration strategy. For example, businesses might only need AWS Application Migration Service for lift-and-shift or DMS for database refactoring. A well-scoped assessment helps determine which tools are necessary.
2. Can AWS migration tools help avoid downtime during the move?
Yes. Tools like AWS MGN offer real-time replication for minimal-downtime cutovers, and Route 53 traffic shifting can help test workloads before going live. Planning and rehearsal are key to avoiding production impact.
3. What if businesses have compliance or data residency requirements?
AWS tools like Control Tower, IAM, KMS, and Config help enforce security, compliance, and audit trails. Cloudtech often pre-configures these guardrails for SMBs in healthcare, finance, or other regulated sectors.
4. How do businesses track progress across different migration tools?
AWS Migration Hub acts as a central dashboard to track the status of multiple migrations (e.g., MGN, DMS) and keeps all teams aligned in real time.
5. Is it possible to estimate cloud costs before migrating?
Absolutely. Tools like AWS Migration Evaluator and the AWS Pricing Calculator model TCO and forecast monthly spend, helping SMBs avoid budget surprises. Cloudtech helps interpret these models into real-world planning.

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