How moving from Azure Cache for Redis to Azure Managed Redis can cut costs by 40%

Moving to Azure Managed Redis can cut your monthly Redis service cost by around 40%. In four East US 2 Premium-to-Balanced price comparisons, the reduction is 43–44%, with high availability on both sides. Those savings apply when the target size meets your workload's capacity and performance needs.

That changes the migration discussion. A lower monthly bill can help pay for the move, then release budget for other work. The decision comes down to three numbers: what you pay today, the cost of the right AMR configuration, and the cost of migration.

What the prices show

Here are four comparisons using Azure Retail Prices API rates for East US 2. Each includes two nodes for high availability (HA).

¹ USD retail pay-as-you-go pricing, East US 2, captured on September 13, 2026. Assumes 730 hours per month and two HA nodes. Check current ACR pricing and AMR pricing before migrating. Excludes taxes, contract discounts, networking, and migration costs.

The opportunity is clear: a workload that fits B20 can move from a $1,619 monthly service bill to $918. That is approximately $8,410 less per year, excluding the one-time migration costs.

Savings also apply when comparing reservations. In this price snapshot, two-node P3 and B20 deployments with one-year reservations cost an equivalent $1,036.17 and $597 per month—a 42.4% reduction.

Both services reserve memory for operations: match the target’s usable capacity to your peak usage and growth needs. Test throughput, latency, and connections before choosing a size. See Microsoft’s ACR memory configuration and AMR sizing guidance.

The revised pricing structure produces these savings. You do not need to assume faster application performance or less engineering work to achieve them.

Redis and Microsoft co-engineered AMR as a first-party Azure service built on Redis Enterprise software. Its architecture distributes work across multiple Redis processes and CPU cores. Memory Optimized, Balanced, and Compute Optimized tiers give customers more choice when matching resources to a workload. These options can reduce overprovisioning; confirm savings from a smaller deployment through testing.

Your starting tier changes the opportunity

The roughly 43% result above applies to those Premium comparisons. Basic, Standard, and Enterprise need their own calculation.

Match Basic without HA and Standard with HA. Reserve non-HA deployments for development and test workloads that can accept interruptions and data loss. See Microsoft’s availability comparison.

At the same East US 2 rates, Basic C2 to non-HA B3 reduces monthly cost from $65.70 to $47.45 (27.8%). Standard C2 to HA B3 reduces it from $163.52 to $94.90 (42.0%). Both require the workload to fit B3.

For Enterprise, include both infrastructure and software charges in the existing bill. AMR has no separate Marketplace component. Compare the complete totals and preserve the required regional topology. See Microsoft's Enterprise pricing structure and migration FAQ.

Savings can disappear if a workload needs more capacity or compute. If a P1 workload needs Compute Optimized X5, monthly service cost rises from $404.42 to $424.86—about 5%.

Additional capabilities, such as JSON, search, or active geo-replication, can justify added cost when they meet a business need. See Microsoft’s feature comparison.

What does migration involve?

For many applications, migration starts with changes to connection settings and clustering configuration. Microsoft says most client applications need no other changes, although some command patterns require attention. See the migration FAQ.

A rebuildable cache can repopulate after the switch; workloads that must preserve data need a planned transfer. Follow Microsoft's documented migration paths, test recovery, and plan for a possible cutover interruption.

Keep the business case focused

Start with the service bill. Then account for three things.

Your actual commercial terms. Compare contract rates and matching reservation terms. Account for existing commitments and confirm reservation eligibility.

The work required to migrate. Budget for client, network, Terraform, and automation changes, plus testing, temporary parallel environments, data transfer, cutover, and rollback preparation.

Costs outside the instance. Include private endpoints, transfer, monitoring, and each regional deployment. AMR includes its managed persistence disk, which can remove Premium's separate persistence-storage charge where the configuration is supported. See AMR persistence guidance. Both services are managed, so assume equal operating effort until specific tasks can be shown to decrease.

How quickly can the move pay for itself?

Take that P3-to-B20 example. Assume testing confirms that B20 meets the application's requirements. Allow an illustrative $5,000 migration budget: 40 engineering hours at $100 per hour, plus $1,000 for temporary overlap, tools, and transfer.

The migration budget is illustrative, not a customer result. The model assumes flat rates, migration spending before month one, and no financing costs. Other recurring costs and operating labor are held equal and excluded; add them for a full TCO.

² The 36-month ACR baseline is hypothetical: it assumes unchanged rates and extends beyond the service's retirement date.

The move saves $700.80 per month and pays back during month eight. Net savings reach $3,409.60 after 12 months and $20,228.80 after 36 months.

The calculation is simple: migration cost ÷ monthly recurring savings = payback time. If the migration budget doubles to $10,000, payback moves to month 15.

Start with the workloads that can save now

Microsoft will retire ACR Enterprise and Enterprise Flash on March 31, 2027, and Basic, Standard, and Premium on September 30, 2028. Check the current retirement guidance when planning your move.

The retirement deadline sets the migration schedule. The savings opportunity can justify starting sooner.

Review your current bill, peak workload metrics, availability requirements, and preferred regions. Start a sizing and capacity-planning discussion with your Microsoft and Redis account teams now to calculate the migration cost and future savings.