4PL · Contract logistics · Control tower
4PL Logistics Services & Solutions Providers
Full 4PL contracts, hybrid 3PL + 4PL or modular contract logistics, covering supply chain design, inventory and order management, and a KPI control tower.
4.5 on Google · 190+ reviews · WCAworld North America Best Partner 2022
Since 1992
WCA founding member
ERP · WMS · TMS integration
Full, hybrid or modular contracts
Fourth-Party Logistics
4PL logistics services: what 4PL is and how it works
4PL, or Fourth-Party Logistics, goes beyond traditional logistics outsourcing. Unlike 3PL providers that focus on execution (transportation, warehousing, fulfillment), a 4PL logistics partner like Interwf takes full responsibility for planning, coordination and optimization across all supply chain functions.
We act as a single strategic partner managing your 3PLs, carriers and suppliers. 4PL providers oversee the entire supply chain, integrating systems, optimizing processes and offering data-driven visibility.
Interwf combines both models, offering operational efficiency and strategic management under one framework, and supports international expansion through customs expertise, network design and global distribution capabilities.
Contracts, integrations and KPIs in a 4PL program
Engagement models 3
Full 4PL contractHybrid 3PL + 4PLModular contract logistics
Systems we connect 4
ERPWMSTMSSecure API integrations
KPIs we track 5
On-time deliveryOrder accuracyCost per shipmentInventory turnoverCarrier performance
What a 4PL runs for you
Our 4PL services & contract logistics capabilities
Interwf’s 4PL logistics solutions are built to streamline your supply chain from end to end.
Strategic supply chain design
Data-driven modeling and network optimization before anything moves.
Operational management (integrated 3PL/4PL)
Seamless coordination of carriers, warehouses and partners, integrated with your existing carriers, 3PL providers and warehouse partners.
Inventory & order management
Centralized systems with real-time visibility of stock and orders.
Control tower & visibility
A single point of truth for monitoring, analytics and KPI tracking: full supply chain visibility with real-time tracking, performance data and automated reporting.
Peak-season capacity planning
We use predictive analytics and capacity planning tools to prepare resources, ensuring service continuity during high-demand periods.
Freight forwarding expertise
Our Miami-based team brings decades of experience in international freight forwarding, managing complex logistics operations across borders and transport modes.
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3PL vs 4PL: key differences
The main difference between 3PL and 4PL lies in scope and integration.
Daniel Zapata · Operations Director
Not sure which 4PL model fits?
Tell Dani how many carriers, 3PLs and systems you run: he recommends a full, hybrid or modular contract and scopes it.
4PL contracts & engagement models
Full 4PL contract
End-to-end supply chain management under a single partner.
Hybrid 3PL + 4PL model
Shared control: Interwf manages strategic oversight while your existing 3PLs handle execution.
Modular contract logistics
A scalable, service-based model to outsource specific logistics functions.
Who outsources to a 4PL
Industries that gain most from 4PL
Industries with complex or global supply chains get the most value from 4PL logistics services.
Manufacturing
Multi-supplier inbound flows, production inventory and outbound distribution coordinated under one framework.
Retail
Stores, distribution centers and carriers aligned on one set of KPIs.
Automotive
Parts, suppliers and carriers coordinated with end-to-end visibility.
Pharmaceuticals
Complex, regulated supply chains managed with compliance across all shipping routes.
Ecommerce
Order flows connected to your platforms, with unified dashboards for inventory and transport.
Startups & mid-sized companies
4PL logistics solutions are scalable and help growing companies professionalize their logistics operations.
How we work with you
How a 4PL implementation works
Depending on complexity, a 4PL implementation takes between three and six months.
01
Discovery
We map your carriers, 3PLs, warehouses, suppliers and current costs, and agree the KPIs.
02
System integration
Our 4PL logistics system connects with your ERP, WMS and TMS platforms, creating unified dashboards for inventory, transport and performance analytics.
03
Partner alignment
Your existing carriers, 3PL providers and warehouse partners are integrated to enhance coordination and performance.
04
Go-live
The control tower goes live with real-time visibility and KPI tracking.
05
Delivered & tracked
Delivery with live tracking on our tracking portal until the file is signed off.
Benefits
Benefits of choosing Interwf as your 4PL provider
Partnering with Interwf gives you a trusted 4PL provider that brings transparency, efficiency and scalability.
Centralized management
Centralized management of logistics partners and assets.
Lower operational costs
Lower operational costs through optimization: route consolidation, supplier benchmarking and end-to-end visibility.
Faster response
Faster response to market and demand changes.
Analytics & forecasting
Advanced analytics and forecasting capabilities that improve inventory accuracy.
International coordination
Simplified coordination across international supply chains.
Secure data connections
Secure API integrations, encrypted data transfers and continuous system monitoring protect your supply chain data.
Why shippers trust Interworld
More than 30 years moving cargo worldwide
Interworld Freight has moved cargo since 1992 with 350+ people and its own offices in the USA, Panama, the Dominican Republic and the Bahamas. It is a founding member of the World Cargo Alliance, IATA accredited, CTPAT certified and WCAworld Best Partner 2022. From first-mile pickup to final delivery we coordinate every detail of your freight journey, with plans tailored to your route, product type and timeline, whether you move high-value electronics or temperature-sensitive goods.
1992operating since
350+people on the team
4countries with our own offices
World Cargo Alliance
Founding member of the allianceWCAworld Best Partner 2022
North America award
IATA accredited
Cargo agent accredited by the International Air Transport Association
CTPAT certified
U.S. CBP supply chain security programNo-commitment quote · Reply within one business day
Ready to hand your supply chain to one strategic partner?
Scope, engagement model, KPIs and fees confirmed in writing, with a clear breakdown from the first email: no surprises, no fine print.
Get a custom 4PL logistics assessment
Moving cargo worldwide since 1992. Tell us the load and get a written quote with every cost itemized.
Request a quote
Talk to a specialist
Our services
Execution under the same roof
The freight, warehousing and consolidation services a 4PL program coordinates.
4PL supply chain management
Strategic oversight of multiple 3PLs, network design and demand forecasting.
4PL warehousing
Warehousing run inside your 4PL program, with inventory visible in real time.
Ocean freight
Shipping goods to, from and within the Americas as a leading ocean freight forwarder.
Air freight
Air freight, charters, FCL and LCL cargo between any two global points.
Road freight
Pickup and delivery, nationwide truck brokerage, LTL and full truckload final mile.
Project cargo
Oversize, out of gauge, overdimensional pieces, RO/RO or time-charter vessels.
Consolidation and Miami warehousing
Client testimonials
What companies say about working with us
Real reviews from our Google profile.
4.5 / 5 · 190+ Google reviews
“I've been working with this freight forwarding company for a while, and their service is truly outstanding. They follow up proactively and make sure everything runs smoothly from pickup to delivery. It's rare to find a company this reliable and customer-focused.”
M
Marcia Vazquez
Google review
“Did great with shipping my items to The Bahamas. Everything was done in a timely manner.”
L
Lynn Rolle
Google review
“The attention from everyone I dealt with is always excellent. You can see the professionalism and care the very first time they attend to you, and it is genuine. Highly recommend Interworld.”
N
Nestor Gonzalez
Google review
“I was very pleased with the service, from beginning to end. Everything was explained to me step by step till I was ready to pick up my machine from the warehouse. I didn't expect to get such service — so professional and knowledgeable.”
E
Ely Krasner
Google review
“Great experience working with them. 100% recommended.”
I
Interprint C.A.
Google review
“Excellent company to work with. Very professional.”
E
Elena
Google review
“The service I received was excellent. I highly recommend this company.”
R
Richard Stifano C.
Google review
FAQ
4PL logistics, answered
What companies ask us before outsourcing their supply chain to a 4PL.
or call +1 (646) 722-0968
Request your 4PL logistics assessment
Tell us your carriers, warehouses, systems and markets. Dani replies within one business day with the engagement model and next steps.
9601 NW 112th Ave, Miami, FL 33178
What your assessment covers
Current carriers, 3PLs and suppliers · Systems to integrate (ERP, WMS, TMS) · KPIs and engagement model
Talk to a person, not a bot
Daniel Zapata · Operations Director
Dani scopes your 4PL program himself and confirms model, integrations and KPIs, in English or Spanish.
4.5 / 5
190+ reviews on Google. Exporters and importers already moving their cargo with Interworld.
Global freight forwarder headquartered in Miami since 1992. Ocean, air and road freight, warehousing and container shipping worldwide.
Dominican Republic
Spring Center Plaza, suite 701, Arroyo Hondo, Distrito Nacional