Comcast Business vs Granite: Which ISP Is Better?

Comcast Business is one of the largest cable providers in the United States, offering a wide range of internet and voice services. Granite Telecommunications aggregates services from various carriers to provide a single point of contact for businesses with multiple locations.

Choosing between a direct provider and an aggregator can be a complex decision. This comparison will break down the key differences to help you find the right fit for your business needs.

Our analysis is powered by Lightyear's proprietary data, which includes aggregated benchmarks from over 70,000 real-world ISP quotes. This gives us a unique view into pricing, installation timelines, and service delivery across the market.

Keep reading for our detailed comparison, or if you're ready to explore provider options, you can begin our questionnaire to receive real-time quotes.

Overview of Comcast Business

Founded in 1963, Comcast is a major telecommunications provider headquartered in Philadelphia, Pennsylvania, primarily serving the United States. The company has a significant presence, with 190,000 employees and a ranking of 33 on the Fortune 500 list.

Comcast Business caters to organizations of all sizes, from small businesses to large enterprises and public sector groups. One of its unique aspects is an integrated security firewall that works with its internet connection, removing the need for extra equipment.

It also offers a five-year price lock guarantee on certain internet bundles, which can help businesses maintain a stable budget.

Overview of Granite

Founded in 2002, Granite Telecommunications is headquartered in Quincy, Massachusetts. The company has around 2,200 employees and serves businesses in the United States and Canada.

While not a Fortune 500 company, Granite provides services to more than 85 Fortune 100 clients. Their model focuses on simplifying telecom management for multi-location businesses through a single point of contact, supported by their Granite360 platform and a dedicated innovation division called Granite Labs.

ISP Products

Dedicated Internet (DIA)

Comcast Business provides its Ethernet Dedicated Internet (EDI) with a wide range of speeds from 10 Mbps to 100 Gbps over its own fiber, coax, and hybrid fiber-coax network. Lightyear's data shows Comcast's 100 Mbps DIA pricing is about 15% below the market average, while its 1 Gbps pricing is on par with the average. Installation takes around 82 days, slightly longer than the 77-day industry average, and the service is backed by a 99.99% uptime SLA.

Granite’s Granite AccessExpress aggregates DIA from multiple carriers, so speeds and transport types vary by location. While their on-net services have a 99.99% uptime SLA, off-net services depend on the underlying provider. Our data indicates Granite's installations are faster than average at 72 days, but pricing is higher—8% above average for 100 Mbps and 21% above for 1 Gbps. Both offer add-ons like managed routers and wireless backup, with Granite also providing SASE/SD-WAN solutions suited for multi-location businesses.

Please note that these figures are averages, and actual timing and pricing can vary significantly based on your region and specific DIA configuration.

For an exact comparison of Comcast Business, Granite, and other top ISPs for your area, we recommend filling out our questionnaire. It uses the most comprehensive dataset in the industry to provide you with accurate, real-time quotes.

DIA Pricing, Delivery and Install Days Compared

The data in this table comes from Lightyear’s aggregated ISP quotes collected in 2024 and 2025 YTD.

• Install Days: how long it typically takes to deliver service.
• 100Mb Price vs Avg / 1Gb Price vs Avg: shows whether this ISP is cheaper or more expensive than the market average.
• Delivery Point: “Suite” means the ISP delivers service all the way to the company’s server room; “MPOE” means the circuit stops at the building’s minimum point of entry (typically the building's utility basement) and the tenant must handle the inside wiring.

Wireless

Comcast Business provides its wireless service, Xfinity Mobile, primarily for phones and personal devices by using Verizon's 5G and LTE network. This is supplemented by access to a broad network of WiFi hotspots from existing Comcast and Xfinity modems.

Granite operates as a multi-carrier aggregator in the US and Canada, offering a different set of wireless solutions. They provide managed services like fixed wireless access (FWA) for primary or backup internet and multi-carrier SIMs, which allows them to source cellular options from various providers depending on the business location.

Security

Comcast Business offers security solutions designed for different business sizes. For general protection, its SecurityEdge product provides a first line of defense against cyberattacks, while its enterprise-level Managed Security suite offers a more robust set of tools.

The enterprise package includes managed VPNs, Unified Threat Management (UTM), custom firewalls, and network-level DDoS protection for Ethernet services. This gives larger organizations a range of options to protect their local networks and data.

Granite’s approach integrates security directly into its managed network services using a Secure Access Service Edge (SASE) framework. This model combines SD-WAN with security functions like Zero Trust components, making it a strong fit for businesses managing multiple locations with a need for consistent, centrally managed security policies.

Broadband

Comcast Business provides its broadband internet service over its own Hybrid Fiber-Coax (HFC) network, with asymmetrical speeds reaching up to 1.25 Gbps for downloads. However, this service includes a 1.2 TB monthly data utilization cap.

Lightyear's data shows Comcast's broadband pricing is approximately 33% higher than the market average. Installation typically takes around 31 days, which is slightly longer than the 28-day industry average.

Granite, on the other hand, offers a managed broadband aggregation service, sourcing internet from multiple carriers. This allows for higher potential speeds of up to 5 Gbps, but availability, transport type, and uptime SLAs are all dependent on the underlying provider at a given location.

Our data indicates Granite's broadband pricing is 29% above the market average, with a longer installation timeline of 41 days. The choice comes down to Comcast's direct, standardized product versus Granite's flexible, multi-carrier management for businesses with diverse location needs.

Broadband Pricing, Delivery and Install Days Compared

The data in this table comes from Lightyear’s aggregated ISP quotes collected in 2024 and 2025 YTD.

• Install Days: how long it typically takes to deliver service.
• 500mb Price vs Avg: shows whether this ISP is more expensive than the market average.
• Delivery Point: “Suite” means the ISP delivers service all the way to the company’s server room; “MPOE” means the circuit stops at the building’s minimum point of entry (typically the building's utility basement) and the tenant must handle the inside wiring.

Ethernet

Comcast Business provides its "Business Internet" service over a Hybrid Fiber-Coax (HFC) network. This service offers asymmetrical speeds with downloads up to 1.25 Gbps, but it includes a 1.2 TB monthly data cap.

Granite, in contrast, acts as an aggregator for Dedicated and Carrier Ethernet services. They build private, managed Ethernet solutions for businesses across the US and Canada by using various underlying carrier networks.

This approach makes Granite's offering suitable for creating point-to-point or multi-point connections between different business sites, all managed through their Granite360 platform.

POTS Replacement

Comcast Business offers its Business Voice service as a replacement for traditional phone lines, designed for specialty applications like fax machines, alarms, and point-of-sale systems. The service is compliant with NFPA 72 for fire alarm signaling and includes an optional 5-hour battery backup and LTE failover, but it requires a Comcast Business Internet connection to avoid extra fees.

Granite’s solution, EPIK, is specifically built as a POTS replacement for life-safety and specialty lines, including fire alarms, elevators, and emergency call boxes. It is also NFPA 72 compliant and offers more flexibility by supporting either LTE or any wired internet connection for backhaul, meaning it is not tied to a single internet provider.

The main distinction lies in their approach. Comcast's offering is a good fit for businesses already within its service footprint, while Granite provides a carrier-agnostic option that works nationwide, making it well-suited for companies managing multiple locations with different internet providers.

Other Key Features Compared

Geographic Coverage

Comcast Business operates solely within the United States. While they don't provide international coverage, their domestic network is vast, serving businesses in many locations across the country.

Granite operates in the United States and Canada. Since they aggregate services from multiple carriers, they don't offer a single public coverage map.

Instead, they check availability for each location using their AccessExpress platform.

SLA

Both Comcast Business and Granite provide a 99.99% uptime Service Level Agreement (SLA) for their on-net dedicated internet services.

In practical terms, this guarantee means your connection could be down for a maximum of about 52 minutes over an entire year.

A key distinction is that Comcast’s SLA covers its own network, whereas Granite’s guarantee for off-net services depends on the specific carrier providing the connection at your location.

Transport Types Available

Comcast Business operates its own Hybrid Fiber-Coax (HFC) and fiber network, which covers over 200,000 route miles. This infrastructure supports a wide range of speeds suitable for different business needs.

Since Granite is an aggregator, they don't have their own network. Instead, they source various transport types like fiber, coax, and wireless from different underlying carriers based on location.

This means Comcast can offer speeds up to 100 Gbps on its network. Granite's available speeds will vary by site, providing a flexible option for companies managing multiple locations.

Customer Support

Comcast Business provides direct customer support for its services. If you have an issue, you'll work directly with their team to resolve it.

Granite acts as a single point of contact for all your services, even if they use different carriers. They handle communication with the underlying providers so you don't have to.

Your choice comes down to preference: working directly with the provider or having a consolidated support team manage everything for you across all locations.

Final Verdict: Comcast Business or Granite?

Your choice between Comcast Business and Granite boils down to a key difference: do you prefer working directly with a network owner or through a managed service aggregator?

Comcast Business is often a better fit for companies with one or a few locations that fall within its large US network. Businesses that value direct customer support and competitive pricing on dedicated internet will find their offerings compelling.

Granite, on the other hand, is designed for organizations managing numerous sites across the US and Canada. If your priority is simplifying telecom with a single bill and one point of contact for all locations, Granite’s model provides significant value.

Ultimately, the right provider depends on your company's geographic footprint, support preferences, and management needs.

To help you see the differences at a glance, here’s a quick summary of how Comcast Business and Granite stack up.

Choose the Right ISP Today With Lightyear

Choosing the right internet service provider is a critical decision that depends on your business's unique structure. The best choice is the one that aligns with your operational goals, whether that's the direct network access of Comcast Business or the multi-location management of Granite.

If you're ready to move from comparison to procurement, Lightyear's platform gives you the data and tools to make an informed decision. We help you find the right fit for your specific locations and budget. Our software helps by:

• Automating the procurement process so you can see benchmarked rates from all best-fit providers in one place.
• Proactively negotiating quotes to make certain you get a fair price that aligns with market data.
• Centralizing all your connectivity options, whether you need DIA, broadband, or wireless backup.

Ready to simplify your telecom procurement? Sign up for a demo to see how Lightyear can help you find and manage the right services for your business.