Real-time
Two-way sync
Changes in Amazon S3 or HubSpot instantly reflect in both systems. No stale data, no manual imports.
Storage ⇄ CRM
Amazon S3 to HubSpot integration — real-time, two-way sync
Keep Amazon S3 and HubSpot in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
- SOC 2 and 6 other compliance frameworks
- POC with real engineers in minutes
Adopted by fast-scaling companies moving mission-critical data in real time
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Why teams connect Amazon S3 and HubSpot
Keep the paperwork with the relationship: HubSpot and Amazon S3 share every customer's records and files in real time, in both directions.
HubSpot holds the customer relationship as structured records; Amazon S3 holds the files that belong to those relationships, from contracts and proposals to signed agreements and statements of work. The two are linked in practice and disconnected in software: someone downloads a document, renames it, and uploads it to the right folder, or exports records out to storage for retention. Done by hand, files drift away from the records they belong to and copies fall out of date.
Stacksync keeps Product, Ticket, Quote, Goal in HubSpot aligned with Objects, Object metadata, Object tags, Object versions in Amazon S3, in real time. A new account or deal can open its own folder in Amazon S3; a document filed in Amazon S3 can surface as a link and metadata on the matching record in HubSpot; and records from HubSpot can be written into Amazon S3 as files or objects for backup, archival, and compliance. You choose which side owns what, and Stacksync keeps the two consistent as either one changes.
Common use cases
- 01 Sync HubSpot Tickets with an internal support database to unify service reporting across channels.
- 02 Push product signup and usage events into HubSpot contact properties to drive lifecycle marketing segmentation.
- 03 Mirror Objects under a given Bucket and prefix into another bucket, region, or a warehouse external stage for backup or downstream processing.
- 04 Trigger a database or ERP record update the moment an S3 Event Notification fires an object-created event, for example when a partner drops an EDI or invoice file into an inbound prefix.
Common sync patterns
Document status on the record
Metadata kept in Amazon S3, such as document type, review state, or whether an agreement is signed, updates a field on the matching record in HubSpot, so people working the account see where the paperwork stands without opening storage.
One place for a customer's files
Attachments that accumulate against a record in HubSpot collect in that customer's folder in Amazon S3, so the full document history lives in one place and is reachable by anyone who needs it.
A folder per account or deal
When an account or deal is created in HubSpot, a matching folder or container opens in Amazon S3, named and organized the same way, so files have a home the moment they are needed.
What you can sync between Amazon S3 and HubSpot
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| Amazon S3 objects | HubSpot objects | How this pairing syncs | |
|---|---|---|---|
| Prefixes (folders) Logical path segments in object keys used to scope a sync and to parallelize throughput, since S3 rate limits partition by prefix. | Stages Synced with incremental and full sync per the Stacksync docs. | Prefixes (folders) is specific to Amazon S3 and Stages to HubSpot — each maps to any object or custom field on the other side. | |
| Multipart uploads In-progress large-object uploads assembled from parts; objects above ~100 MB (required above 5 GB) are written this way, and incomplete uploads persist until completed or aborted. | Audit Synced with incremental and full sync per the Stacksync docs. | Multipart uploads is specific to Amazon S3 and Audit to HubSpot — each maps to any object or custom field on the other side. | |
| Buckets Top-level, region-scoped containers that hold objects; enumerated to discover the namespaces and prefixes a sync should cover. | Contact Synced with incremental and full sync per the Stacksync docs. | Buckets is specific to Amazon S3 and Contact to HubSpot — each maps to any object or custom field on the other side. | |
| Objects Files stored under a key; content is read with GET and written with PUT, and each object's key/size/ETag/LastModified is the unit indexed into a database. | Company Synced with incremental and full sync per the Stacksync docs. | Objects is specific to Amazon S3 and Company to HubSpot — each maps to any object or custom field on the other side. | |
| Object metadata System metadata (Content-Type, size, ETag, LastModified) plus user-defined x-amz-meta-* headers; user metadata is fixed at write time and only changeable by rewriting the object. | Deal Synced with incremental and full sync per the Stacksync docs. | Object metadata is specific to Amazon S3 and Deal to HubSpot — each maps to any object or custom field on the other side. | |
| Object tags Up to 10 key-value tags per object, mutable in place via the tagging API independent of content, so classification and retention labels sync two-way without rewriting files. | Line Item Synced with incremental and full sync per the Stacksync docs. | Object tags is specific to Amazon S3 and Line Item to HubSpot — each maps to any object or custom field on the other side. |
How changes propagate between Amazon S3 and HubSpot
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Amazon S3 HubSpot Sub-second propagation
DetectionAmazon S3 notifies Stacksync of record changes through webhook events. S3 Event Notifications push object-created, object-removed, and object-tagging events to SNS, SQS, Lambda, or EventBridge.
DeliveryEach detected change is written to HubSpot through its API, with automatic retries and rate-limit backoff.
HubSpot Amazon S3 Sub-second propagation
DetectionHubSpot pushes changes as they happen — webhook events backed by change data capture. Records: incremental near-real-time change tracking.
DeliveryEach detected change is written to Amazon S3 through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Amazon S3: S3 sustains at least 3,500 PUT/COPY/POST/DELETE and 5,500 GET/HEAD requests per second per partitioned prefix and scales higher automatically; bursts can return HTTP 503 SlowDown while it repartitions.
- HubSpot: Request limits vary by subscription tier and API type.
What ships with Amazon S3 ⇄ HubSpot
Connect Amazon S3 and HubSpot for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Amazon S3–HubSpot connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Amazon S3 or HubSpot data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
At scale
Event queues
Handle millions of events per minute without losing a single Amazon S3 or HubSpot record.
Observability
Monitoring
Track your Amazon S3 ⇄ HubSpot sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Amazon S3 and HubSpot.
How the Amazon S3 and HubSpot connectors work
Amazon S3
- Integration surface
- S3 REST API (also via AWS SDKs and the S3-compatible endpoint)
- Authentication
- AWS IAM credentials — an access key ID and secret access key signed with AWS Signature Version 4; supports temporary STS credentials and cross-account IAM roles
- Change detection
- S3 Event Notifications push object-created, object-removed, and object-tagging events to SNS, SQS, Lambda, or EventBridge; there is no modified-since query, so polling relies on each object's LastModified from ListObjectsV2
- Capabilities
- read · write · webhooks
- Rate limits
- S3 sustains at least 3,500 PUT/COPY/POST/DELETE and 5,500 GET/HEAD requests per second per partitioned prefix and scales higher automatically; bursts can return HTTP 503 SlowDown while it repartitions.
HubSpot
- Integration surface
- REST API (CRM v3)
- Authentication
- OAuth (choose HubSpot account and authorize Stacksync); requires a HubSpot 'Super Admin' to grant access; optional "Grant access to sensitive fields" checkbox for sensitive/highly sensitive fields
- Change detection
- Records: incremental near-real-time change tracking. Associations: HubSpot has no native association CDC
- Capabilities
- read · write · CDC · webhooks
- Rate limits
- Request limits vary by subscription tier and API type.
How it works
How to connect Amazon S3 to HubSpot — three steps, no code
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
- 01
Connect your apps
Authenticate Amazon S3 and HubSpot with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Amazon S3
connected
HubSpot
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Amazon S3 and HubSpot objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
objects · Amazon S3 ⇄ HubSpotCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Amazon S3 HubSpotCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Amazon S3 and HubSpot integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Amazon S3 and HubSpot: authenticate both systems, choose the objects to sync (such as Amazon S3's Prefixes (folders) and Multipart uploads), map fields visually, and changes propagate both ways in milliseconds — no code required.
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HubSpot: CDC Boost requires manually creating rollup calculation properties in HubSpot per association table (the unlabeled _label_none rollup is mandatory) and a sync restart to activate. Amazon S3: Objects can be up to 5 TB, but a single PUT is capped at 5 GB, so larger files must use multipart upload, and objects in Glacier storage classes must be restored before their bytes can be read. Stacksync's field mapping accounts for these differences between Amazon S3 and HubSpot without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Amazon S3 and HubSpot records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Amazon S3 and HubSpot connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Amazon S3–HubSpot integration in-house.
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Yes — Stacksync ships production-grade connectors for both Amazon S3 and HubSpot. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Amazon S3: S3 Event Notifications push object-created, object-removed, and object-tagging events to SNS, SQS, Lambda, or EventBridge; there is no modified-since query, so polling relies on each object's LastModified from ListObjectsV2. On HubSpot: Records: incremental near-real-time change tracking. Associations: HubSpot has no native association CDC. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
SECURITY
Security teams trust Stacksync
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS
SSO & SCIM
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Alerts
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Secure connection options
Securely connects to your systems with:
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