Cloud migration checklist for SMBs

• Define the migration strategy. Set goals, pick the right path per workload (rehost, replatform, refactor, repurchase), and agree on success metrics and guardrails.
• Audit the current environment. Inventory apps, data, and dependencies; surface obsolete tools and data quality gaps before moving anything.
• Select cloud and services. Choose services that fit your budget and workflows today and can scale with growth; confirm integration with your existing tools.
• Implement the correct security, identity, and access management (IAM). Enforce multifactor authentication (MFA) and least privilege, encrypt data at rest and in transit, and document responsibilities early to avoid rework.
• Develop a migration roadmap. Sequence waves, timelines, and owners; prioritize high-impact systems and plan contingencies.
• Plan a data migration. Clean, standardize, back up, and move data in a controlled way to minimize downtime and errors.
• Confirm with a testing and validation strategy. Smoke-test functions, reports, and integrations; include user acceptance testing and a rollback plan.
• Cutover and optimization. Switch production with minimal downtime; then, right-size compute and storage, and tune performance for cost and speed.
• Analyze post-migration. Track outcomes like cost, uptime, and response times; capture lessons learned; and schedule the next wave with confidence.

A clear strategy keeps projects on budget and on schedule. Decide upfront what you’re moving, why it matters, and how you’ll measure success.

For each workload, choose the lowest-effort and/or most accessible approach that meets your goal: rehost for speed, replatform for modest ops gains, refactor for long-term efficiency, or repurchase a software-as-a-service (SaaS) solution to drop maintenance.

Align choices to tradeoffs between speed, cost, and technical debt.

Best practices

• Write crisp objectives and key performance indicators (KPIs) — for example: cut hosting cost by 20%, reduce incidents by 30%, improve page load under 2s.
• Define guardrails: change freeze windows, rollback rules, and who approves cutover.
• Pick a landing zone pattern for accounts, identity, logging, and security controls before moving the first app.
• Sequence work by business impact and risk, not by server list order.

Helpful AWS options

• Migration Evaluator for a directional business case and right-sizing insights.
• AWS Transform to discover, assess, and track progress in one place.
• AWS Control Tower to stand up a best-practice landing zone with guardrails.

Review strategies for a successful cloud migration for SMBs.

• Build a single list of apps, owners, service-level agreements (SLAs), data stores, integrations, and licensing.
• Tag systems by migration treatment (rehost, replatform, refactor, repurchase) and by wave.
• Note compliance requirements, peak usage windows, and maintenance schedules.

Helpful AWS options

• Application Discovery and AWS Migration Hub for automated discovery and dependency maps.
• AWS Config to inventory cloud resources you already use and detect drift.
• AWS Trusted Advisor for quick checks on cost, performance, and security risks.

Choose services that fit your budget and workflows today and can scale with growth. Favor managed services to reduce admin work.

For example, a marketing agency may pair Amazon Simple Storage Service (Amazon S3) for assets with Athena/AWS Glue for analytics. Or, a boutique retailer may adopt cloud point-of-sale (POS) software, Amazon Relational Database Service (Amazon RDS) for inventory, and Amazon CloudFront for a faster storefront.

Best practices

• Prioritize services that integrate with your current tools, like QuickBooks, HubSpot, Shopify, Microsoft 365, and Google Workspace.
• Prefer managed databases (Amazon RDS/Aurora), containers (Amazon Elastic Container Service (Amazon ECS)/Amazon Elastic Kubernetes Service (Amazon EKS)), or serverless (AWS Lambda), as they simplify operations.
• Validate pricing models and growth paths before committing.

Helpful AWS options

• AWS Compute Optimizer guidance to right-size from day one.
• AWS Cost Explorer, AWS Budgets, and the AWS Cost and Usage Reports for visibility and guardrails.

Learn more in our user guide: Analyzing your costs and usage with AWS Cost Explorer.

Security planning early prevents costly rework. Start with identity: centralize sign-in, enforce MFA, and grant least privilege. Encrypt data at rest and in transit.

Keep an activity trail, so you can answer “who did what, when?” during audits. If you handle regulated data, such as healthcare or legal data, align your controls with those obligations.

Best practices with AWS

• Use AWS IAM Identity Center for single sign-on (SSO) and MFA across accounts and apps.
• Apply least-privilege roles; avoid long-lived access keys; prefer temporary credentials.
• Encrypt with AWS Key Management Service (AWS KMS); enable Hypertext Transfer Protocol Secure (HTTPS) and Transport Layer Security (TLS) for every endpoint.
• Turn on Amazon CloudTrail org-wide; enable AWS Security Hub and Amazon GuardDuty; use AWS Backup.

Helpful AWS options

• Reference cloud security best practices for SMBs and cloud information security for checklists and examples.

Create a step-by-step plan with timelines, milestones, and owners. Group applications into waves that share dependencies.

For example, a logistics company may move reporting first, then customer-facing systems during low-traffic hours.

Best practices

• Define wave exit criteria, as functional tests are passed, performance is validated, and rollback rehearsed.
• Communicate change windows to stakeholders; document a clear escalation path.
• Keep a “day-2” checklist for each wave: monitoring, backups, access, alarms.

Helpful AWS options

• AWS Migration Hub Orchestrator to standardize runbooks for rehost and database moves.
• AWS Systems Manager Change Manager to track approvals and execution.
• AWS Well-Architected Framework is a design and validation checklist.

Clean, standardize, and back up your data before you move it. Typical SMB patterns include consolidating spreadsheets and CRM exports, migrating a database to a managed service, and syncing files without disrupting the business.

Best practices

• Decide per dataset: one-time bulk load, ongoing sync, or cutover replication.
• Normalize formats, fix duplicates, and document owners and retention rules.
• Test on a subset, validate counts and checksums, and keep a rollback snapshot.

Helpful AWS options

• AWS Database Migration Service (AWS DMS) for low-downtime database moves; AWS Schema Conversion Tool for engine changes.
• AWS DataSync for scheduled, verified transfers between on-premises and S3/EFS, or between clouds.
• AWS Snowball for very large datasets; Amazon S3 Transfer Acceleration for long-distance uploads.
• AWS Glue for transformations and cataloging.

Prove everything works before you go live. Validate critical paths — checkout, invoicing, reporting, logins — and confirm integrations, performance, and security. Include user acceptance testing and a documented rollback plan.

Best practices

• Run smoke, performance, and failover tests in the target environment.
• Rehearse cutover and rollback; time each step; assign owners.
• Validate monitoring, alerts, access, and backups as part of “done.”

Helpful AWS options

• AWS Elastic Disaster Recovery (AWS DRS) for non-disruptive drills and quick failback.
• Amazon CloudWatch and AWS X-Ray for metrics, logs, and traces; set alarms on SLAs.
• Amazon Route 53 weighted or blue-green routing to pilot with a small percentage of traffic.

Switch production with minimal downtime; then, tune for cost and performance. For example, a retail shop might switch its domain name system (DNS) after a quiet-hour data sync; a services firm may right-size compute and storage the first week after go-live.

Best practices

• Choose a cutover style that aligns with the risk: big bang, phased, or blue-green.
• Freeze changes during cutover; keep a verified rollback path.
• Optimize quickly: right-size instances, enable autoscaling, and match storage classes to access patterns.

Helpful AWS options

• AWS Compute Optimizer and AWS Graviton Processors instances for price-performance gains.
• AWS Auto Scaling, ALB/ELB, and Amazon CloudFront for resilience and speed.
• Amazon EBS gp3, Amazon S3 Intelligent-Tiering, and database instance tuning for cost control.
• Savings Plans or Amazon EC2 Reserved Instances (RI), AWS Cost Explorer, and AWS Budgets for ongoing optimization.

Measure outcomes and capture lessons to guide the next wave. Track cost, reliability, and customer experience improvements such as faster order fulfillment, higher uptime, or lower support volume.

Best practices

• Review KPIs monthly, and compare them to your pre-migration baseline.
• Run a Well-Architected review; close gaps and update runbooks.
• Document wins and issues; adjust your roadmap and funding based on results.

Helpful AWS options

• AWS Cost Explorer, AWS Cost and Usage Reports, to dive deeper into your expenditure and usage data.
• Amazon CloudWatch and AWS CloudTrail Lake dashboards for ops and audit visibility.
• AWS Security Hub and AWS Backup Audit Manager for posture and recovery readiness.

Your cloud migration checklist gives you a clear path from planning to proof. With AWS, small and mid-sized businesses can follow that path with tools and guidance designed for lean teams.

The result is faster deployment, reduced IT overhead, and a secure foundation you can operate confidently.

Whether you’re rehosting a few servers or modernizing a core workload, AWS pairs managed services with prescriptive best practices and a broad Partner ecosystem.

You stay focused on business outcomes, like performance, availability, and customer experience. Meanwhile, AWS helps you standardize identity, logging, encryption, backups, and monitoring from day one.

Ready to take the next step? Explore SMB-friendly quick starts and offers on Get Started, or Find an AWS expert to scope a right-sized pilot, connect your existing tools, and move to the cloud with confidence.