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F5 Silverline Managed Services vs Fastly comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 5, 2024

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
7.6
Cloudflare WAF offers quick ROI, crucial protection for e-commerce, saves bandwidth, and balances cost with valuable free features.
Sentiment score
6.1
Organizations experience increased efficiency and revenue growth with F5 Silverline, noting significant ROI and reduced cybersecurity staffing needs.
Sentiment score
6.0
Fastly boosts return on investment with improved performance, reduced latency, and cuts infrastructure costs by 40-60%.
My experience with the pricing or licensing of Cloudflare Web Application Firewall is that many features can be accessed for free, so the pricing is definitely reasonable.
Owner at Hga consulting
Our revenue has grown substantially after the introduction of F5 Silverline Managed Services.
Product Management Consultant at Mafoi Strategic Consultants
I have seen a return on investment in the time saved.
Cloud Support at a security firm with 51-200 employees
Realizing a 30 to 50% reduction in latency and page load time, ensuring users experience a seamless workflow.
Senior Software Developer at hireHQ
I have seen a return on investment, particularly in time savings, especially regarding the changes.
Arquitecto De Soluciones at a tech vendor with 10,001+ employees
 

Customer Service

Sentiment score
6.3
Cloudflare WAF support is mixed; responsive for some, but Indian customers face call availability and administrative issues.
Sentiment score
6.1
F5 Silverline Managed Services gets mixed reviews; praised for 24/7 support, but criticized for response times and communication issues.
Sentiment score
6.3
Fastly's customer care is efficient with multi-channel support, but has inconsistencies in response times and transparency across time zones.
I would rate the technical support with Cloudflare as excellent every time I've had to contact them.
Owner at Hga consulting
The technical support of Cloudflare Web Application Firewall rates between five and seven at maximum.
IT Manager at Amla Commerce
I think 24/7 expert support and streamlined compliance management definitely benefit my company's security efforts.
Associate Vice President at Novac Technology Solutions
Configuration problems largely arise from customer misunderstanding, leading to cases opened for configuration aspects where AI has become increasingly useful.
Network And Security Consultant at TD SYNNEX
They resolve the issues by joining me to fix them.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
demonstrating the team's technical expertise in CDN and Edge architecture
Senior Software Developer at hireHQ
We have SLAs defined because we opted for enterprise support pricing.
Staff Engineer at a retailer with 1,001-5,000 employees
We are not getting quick responses from Fastly technical support engineers.
Technical support engineer at Adobe
 

Scalability Issues

Sentiment score
7.7
Cloudflare Web Application Firewall offers impressive scalability and automated management, but additional features may incur costs for smaller organizations.
Sentiment score
7.1
F5 Silverline Managed Services excels in scalability, offering seamless integration and effective scaling across different environments with adaptable licensing.
Sentiment score
6.4
Fastly is praised for scalability, ease of growth support, cloud flexibility, excellent support, and successful global integrations.
The scalability of Cloudflare Web Application Firewall rates between 8 to 9, as it depends upon the use cases and what exactly the client needs.
IT Manager at Amla Commerce
The solution is fully scalable, and I would give it a rating of ten on a scale of one to ten for scalability.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
F5 Silverline Managed Services is not a concern due to its scalability.
Associate Vice President at Novac Technology Solutions
Seamlessly handling massive traffic without requiring backend changes due to its globally distributed Edge network and stateless API-driven design.
Senior Software Developer at hireHQ
 

Stability Issues

Sentiment score
8.2
Cloudflare Web Application Firewall is praised for stability, high performance, effective protection, daily use, and minimal downtime.
Sentiment score
7.6
F5 Silverline Managed Services offers stable performance with 99.95% uptime, though occasional issues are swiftly resolved by support.
Sentiment score
7.3
Fastly is stable and reliable with high uptime, no technical issues, and strong performance in enterprise applications.
The stability of Cloudflare Web Application Firewall deserves a perfect 10 out of 10.
IT Manager at Amla Commerce
I have not seen anything suspicious with its accuracy or output.
Product Management Consultant at Mafoi Strategic Consultants
Highly reliable for enterprise-scale applications with high uptime guarantees.
Senior Software Developer at hireHQ
 

Room For Improvement

Cloudflare WAF needs feature enhancements, better usability, improved support, advanced DDoS protection, and solutions for latency and alerts.
F5 Silverline Managed Services is criticized for its complex deployment, high costs, and need for improved integration and features.
Fastly requires improvements in China presence, configuration complexity, pricing, customer support, security features, documentation, and bot detection.
The product can improve by having more multitenancy capability, which is currently not available.
Network Architect at a computer software company with 11-50 employees
I think they're doing a good job with DNS and as support for any domains that I create or that my clients create, it's mandatory for me to ensure they have Cloudflare as their DNS provider.
Owner at Hga consulting
And maybe something similar to Pushpin that Fastly has, which is an option where you can push messages that then can be scaled globally over the network.
CTO at PlayNirvana
F5 Silverline Managed Services needs to adapt compliances related to India's DPDP.
Associate Vice President at Novac Technology Solutions
Localized support could enhance F5 Silverline Managed Services.
Cloud Support at a security firm with 51-200 employees
Improvements could include the creation of highly optimized profiles.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
I chose 8 out of 10 because it has excellent performance and low latency delivery, making it suitable for larger applications, with strong Edge Caching and instant purging capabilities.
Senior Software Developer at hireHQ
Fastly could improve by improving the documentation and having some code examples.
Arquitecto De Soluciones at a tech vendor with 10,001+ employees
Fastly should provide features similar to Cloudflare regarding a block list.
Technical support engineer at Adobe
 

Setup Cost

Cloudflare Web Application Firewall offers affordable, flexible pricing with no upfront costs, noted for competitiveness and included support services.
F5 Silverline pricing varies; some find it costly, others see value, with costs influenced by features and flexibility.
Fastly is competitively priced with usage-based costs and customizable options, but some find it expensive with a learning curve.
The solution is expensive
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
Regarding the pricing of F5 Silverline Managed Services, I would say it is quite affordable.
Associate Vice President at Novac Technology Solutions
My experience with pricing, setup cost, and licensing is that it is better than other solutions.
Cloud Support at a security firm with 51-200 employees
It operates on a pay-as-you-go structure, but costs scale with traffic, requiring monitoring to avoid unexpected spikes based on data transfers and the number of requests handled.
Senior Software Developer at hireHQ
In terms of price, I find it good.
Arquitecto De Soluciones at a tech vendor with 10,001+ employees
 

Valuable Features

Cloudflare Web Application Firewall provides comprehensive security features, easy setup, scalability, and competitive pricing with praised performance and stability.
F5 Silverline provides 24/7 DDoS protection, API security, efficient traffic management, and centralized cloud-native threat analysis with user-friendly setup.
Fastly CDNs integrate with Signal Sciences WAF for efficient content delivery, enhancing performance with global edge locations and code management.
The custom rules and the geo-redundant geographical rule feature, which allows me to implement geographical rules for customers, add significant value.
Network Architect at a computer software company with 11-50 employees
The best features of Cloudflare Web Application Firewall are multiple, including the WAF, rate limiter, and bot attack protection.
IT Manager at Amla Commerce
Cloudflare Web Application Firewall's advanced reporting and analytics tools add a layer that we're able to visualize and see before it actually hits the local firewall.
Owner at Hga consulting
It allows for centralized management of certificates, protecting applications from top ten attacks like SQL injection and cross-site scripting.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
One part is positive security, which allows you to know vulnerabilities in depth, and you can implement CAPTCHA and MFA for logins, while also preventing known threats with included signatures.
Network And Security Consultant at TD SYNNEX
The layered defense and DDoS consistently block attacks without disrupting legitimate traffic, and the reliability is what makes them shine.
Cloud Support at a security firm with 51-200 employees
The best feature that Fastly offers is the Edge location, which reduces latency, making our applications work smoother because we do not have to constantly call the backend.
Senior Software Developer at hireHQ
Fastly has a wide number of configuration features that can be performed, and I emphasize that they can be done from code, which makes it much more traceable.
Arquitecto De Soluciones at a tech vendor with 10,001+ employees
In this project, it is working as a reverse proxy for CDN and WAF, web application firewall, additionally image optimization.
Technical support engineer at Adobe
 

Categories and Ranking

Cloudflare Web Application ...
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Ranking in Web Application Firewall (WAF)
6th
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
26
Ranking in other categories
No ranking in other categories
F5 Silverline Managed Services
Ranking in Web Application Firewall (WAF)
23rd
Average Rating
8.0
Reviews Sentiment
6.6
Number of Reviews
18
Ranking in other categories
Distributed Denial-of-Service (DDoS) Protection (12th)
Fastly
Ranking in Web Application Firewall (WAF)
21st
Average Rating
8.6
Reviews Sentiment
6.5
Number of Reviews
11
Ranking in other categories
CDN (7th), Distributed Denial-of-Service (DDoS) Protection (9th)
 

Mindshare comparison

As of June 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 4.5%, down from 7.0% compared to the previous year. The mindshare of F5 Silverline Managed Services is 1.5%, up from 1.1% compared to the previous year. The mindshare of Fastly is 1.7%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Cloudflare Web Application Firewall4.5%
Fastly1.7%
F5 Silverline Managed Services1.5%
Other92.3%
Web Application Firewall (WAF)
 

Featured Reviews

DB
CTO at PlayNirvana
Advanced security reporting has protected high-traffic betting platforms from constant attacks
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we have a dedicated IT team for that, and I'm not involved with Cloudflare much anymore. But if I were to compare them to F5, I would like to see more features that F5 offers. F5 has an option to bring the whole infrastructure, the whole WAF and all their packages, Bot Management, and everything else on your infrastructure. You need to install certain services from their side, and then you can choose if you would like requests to hit your servers immediately or if requests need to be proxied through F5 backbone. That would be a nice addition because we have 90% of the traffic as legit traffic coming from whitelisted servers. If it comes from whitelisted servers, I don't need to go every request through the backbone; I could easily just IP whitelist everything. Then I could maybe have Bot Management on my infrastructure that drastically reduces the price of Cloudflare. I would like to see Push CDN more improved in the next release of Cloudflare Web Application Firewall. And maybe something similar to Pushpin that Fastly has, which is an option where you can push messages that then can be scaled globally over the network. From our perspective, if we have a listener that listens for stock updates, I would just need to have one processor that pushes those updates to the Cloudflare API, and then Cloudflare would broadcast that message to all listeners. Cloudflare will check the order of the message, and if you, as a customer, are not connected or have some kind of network issue, when you reconnect, you will receive the latest state and missing updates.
Mohan Janarthanan - PeerSpot reviewer
Associate Vice President at Novac Technology Solutions
Cloud applications have gained stronger protection and real-time defense against web attacks
What really stands out for me in terms of advantages of F5 Silverline Managed Services is that in a single cloud platform, I can protect my web applications against attacks. I can also use my load balancer in F5 because they are providing and acting as a load balancer too, and they will support the volumetric and DDoS attacks and malicious attacks. Regarding the real-time threat intelligence feature, I do use this aspect in F5 Silverline Managed Services. It blocks malicious IPs or bad IPs for my server, protecting against my applications. For example, if someone is a bad actor trying to access via a malicious IP, I can block it because the threat intelligence has the capability to block the malicious IP. The adaptable and flexible security impacts threat response time positively. It is effective because it blocks my malicious traffic. Whenever I face issues related to that application, it automatically routes my traffic to act as a proxy and routes my traffic to their scrubbing center, especially in case of any volumetric attack.
Pranay Jain - PeerSpot reviewer
Senior Software Developer at hireHQ
Edge caching has transformed response times and delivers faster candidate data globally
Fastly can be improved in certain areas such as VCL, which is powerful but has a steep learning curve for normal users. A more user-friendly, UI-based configuration could simplify the experience, alongside better templates for common use cases and dashboard improvements, as the current dashboard feels complex for beginners, and pricing can be hard to predict for smaller companies. I chose 8 out of 10 because it has excellent performance and low latency delivery, making it suitable for larger applications, with strong Edge Caching and instant purging capabilities. However, VCL complexity and pricing predictability, especially for smaller companies, along with a user-friendly dashboard are areas impacting my score.
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Top Industries

By visitors reading reviews
Construction Company
17%
Financial Services Firm
9%
Comms Service Provider
9%
Manufacturing Company
7%
Financial Services Firm
16%
Comms Service Provider
14%
Insurance Company
9%
Construction Company
6%
Comms Service Provider
12%
Financial Services Firm
11%
Outsourcing Company
9%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise6
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise11
By reviewers
Company SizeCount
Small Business6
Large Enterprise7
 

Questions from the Community

What needs improvement with Cloudflare Web Application Firewall?
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we...
What is your primary use case for Cloudflare Web Application Firewall?
We are using Cloudflare Web Application Firewall's advanced reporting and analytics tools with their Zero Trust, so e...
Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?
For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you hav...
What is your experience regarding pricing and costs for F5 Silverline Managed Services?
Regarding the pricing of F5 Silverline Managed Services, I would say it is quite affordable.
What needs improvement with F5 Silverline Managed Services?
One thing that was a hassle for us regarding F5 Silverline Managed Services was the deployment of this particular sof...
What is your experience regarding pricing and costs for Fastly?
The pricing of Fastly can be hard to predict because it is primarily usage-based with minimal setup costs and flexibl...
What needs improvement with Fastly?
Fastly can be improved in certain areas such as VCL, which is powerful but has a steep learning curve for normal user...
What is your primary use case for Fastly?
Fastly serves as an Edge Cloud platform and CDN that we use for real-time Edge Caching and instant caching purging, a...
 

Also Known As

Cloudflare WAF
F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection
No data available
 

Overview

 

Sample Customers

crunchbase, udacity, marketo, okcupid, zendesk
City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office
Twitter, Airbnb, Alaska Airlines, Pinterest, Vimeo, The Guardian, The New York Times, Ticketmaster, The Drupal Association, Opera, about.com, imgur, Etsy, Foursquare, GitHub, New Relic, shopify, Shazam, Firebase
Find out what your peers are saying about F5 Silverline Managed Services vs. Fastly and other solutions. Updated: June 2026.
900,747 professionals have used our research since 2012.