Network Egress Costs
Parent: MongoDB Atlas Cost Optimization · Published reference · snapshot 2026-10-15
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Definitions
- [high] Data transfer costs within the same region are the least expensive, followed by transfers between different regions, with Internet transfers being the most costly. Sources: https://www.mongodb.com/docs/atlas/billing/billing-breakdown-optimization.md, https://www.pointfive.co/efficiency-hub/cloud-services/mongodb-atlas [source]
Structure and components
- [low] While application traffic drives the majority of costs, essential platform operations contribute small amounts of additional data transfer to aggregate billing, with the underlying cloud provider billing this traffic as part of total network usage. Sources: https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
- [medium] MongoDB Atlas always compresses intra-cluster communication. On Atlas Infinite clusters, the storage layer manages replication, backup, and recovery internally, and Atlas does not count this internal data movement toward data transfer costs. Sources: https://www.mongodb.com/docs/atlas/architecture/current/cost-saving-config.md, https://www.mongodb.com/docs/atlas/billing/atlas-infinite-costs.md, https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
Facts and statements
- [low] Exporting logs to external services routes traffic through the Atlas control plane in AWS us-east-1, incurring cross-region or inter-cloud charges plus Internet egress costs if the cluster is not in that region. Sources: https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
- [medium] To minimize costs, locate clusters in the same region as most traffic, ensure queries originate from the same cloud region and provider, and enable network compression in client drivers to reduce the data sent between client and server. Sources: https://www.mongodb.com/docs/atlas/billing/billing-breakdown-optimization.md, https://www.mongodb.com/docs/atlas/architecture/current/cost-saving-config.md, https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
- [low] MongoDB Atlas charges $0.125 per GB for data exported to AWS S3, Azure Blob Storage, or Google Cloud Storage buckets, in addition to cloud service transfer costs, after compressing the data before export. (verified as of 2026-10-15) Sources: https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
- [low] Multi-region clusters may incur higher data transfer costs depending on the number and location of additional regions and the number of clusters deployed to each region. Sources: https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
- [high] AWS VPC peering connections crossing Availability Zones incur data transfer charges for ingress and egress traffic, with cross-AZ peering costing $0.01/GB in both directions for a total of $0.02/GB. (verified as of 2026-10-15) Sources: https://aws.amazon.com/blogs/architecture/overview-of-data-transfer-costs-for-common-architectures/, https://blog.besharp.it/aws-data-transfer-costs-from-a-nutshell-to-the-calculator-through-3-real-world-scenarios/ [source]
- [low] AWS NAT Gateway costs $0.048/hour plus $0.048/GB for data processing, while data transfer out costs $0.09/GB. (verified as of 2026-10-15) Sources: https://blog.besharp.it/aws-data-transfer-costs-from-a-nutshell-to-the-calculator-through-3-real-world-scenarios/ [source]
- [low] Centralized network architectures are convenient for organizations with 5+ accounts and moderate traffic per account (<5TB/account/month), while distribution is preferable for very few accounts (<3-4) with extremely high traffic (>50TB/account/month). Sources: https://blog.besharp.it/aws-data-transfer-costs-from-a-nutshell-to-the-calculator-through-3-real-world-scenarios/ [source]
- [low] Queries from on-premises environments, across cloud providers, or between continents on the same cloud provider incur the greatest data transfer costs. Sources: https://www.mongodb.com/docs/atlas/billing/data-transfer-costs.md [source]
Related concepts
- Costs — is a part of Network Egress Costs
- Network — is a part of Network Egress Costs
- Egress — is a part of Network Egress Costs
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