Fastly vs SiteLock comparison

Why PeerSpot?

Fastly and SiteLock are both solutions in the Distributed Denial-of-Service (DDoS) Protection category. Fastly is ranked #11 with an average rating of 8.3, while SiteLock is ranked #27. Fastly holds a 3.7% mindshare in DDOS, compared to SiteLock’s 2.2% mindshare. Additionally, 100% of Fastly users are willing to recommend the solution, compared to 66% of SiteLock users who would recommend it.

Fastly

Read 11 Fastly reviews

5,159 Views
2,425 Comparison Views

100% willing to recommend

SiteLock

Read 3 SiteLock reviews

3,546 Views
1,312 Comparison Views

66% willing to recommend

Fastly

SiteLock

Comparison Buyer's Guide

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Executive SummaryUpdated on Jun 3, 2026

SiteLock and Fastly compete in web security and content delivery. SiteLock has an advantage in security, while Fastly offers superior content delivery and performance optimization, potentially providing more significant long-term value for content-focused businesses.

Features: SiteLock includes malware scanning, vulnerability detection, and firewall protection, ideal for maintaining website integrity. Fastly provides fast content delivery, real-time logging, and scalability, suited for businesses focusing on speed and performance.

Ease of Deployment and Customer Service: SiteLock offers straightforward deployment with dedicated customer service for smooth onboarding. Fastly may require more technical knowledge for setup, but efficient customer service supports effective problem-solving.

Pricing and ROI: SiteLock presents competitive pricing targeting smaller businesses needing web protection, offering a good ROI. Fastly, potentially more costly, justifies its price with high performance and scalability, providing a better ROI for businesses leveraging its content delivery capabilities.

To learn more, read our detailed Fastly vs. SiteLock Report (Updated: September 2026).

Buyer's Guide

Fastly vs. SiteLock

September 2026

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Helped 913,806 peers since 2012

Review summaries and opinions

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

Categories and Ranking

Fastly

Ranking in CDN

7th

Ranking in Web Application Firewall (WAF)

25th

Ranking in Distributed Denial-of-Service (DDoS) Protection

11th

Average Rating

8.6

Reviews Sentiment

6.5

Number of Reviews

Ranking in other categories

No ranking in other categories

SiteLock

Ranking in CDN

16th

Ranking in Web Application Firewall (WAF)

37th

Ranking in Distributed Denial-of-Service (DDoS) Protection

27th

Average Rating

6.6

Reviews Sentiment

8.1

Number of Reviews

Ranking in other categories

Static Application Security Testing (SAST) (47th)

Mindshare comparison

As of September 2026, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of Fastly is 3.7%, up from 2.6% compared to the previous year. The mindshare of SiteLock is 2.2%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Distributed Denial-of-Service (DDoS) Protection Mindshare Distribution
Product	Mindshare (%)
Fastly	3.7%
SiteLock	2.2%
Other	94.1%

Distributed Denial-of-Service (DDoS) Protection

Featured Reviews

Pranay Jain

Senior software engineer at Simplify vms

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.

Read full review

it_user723534

Guitarist at a media company with self employed

It's not easy to get out once you're in

Sitelock may perform a useful service, but be wary of giving them your credit card information. When you sign on for the paid service, Sitelock: * Hides (makes it difficult to find) that they default the auto-renew (you can't sign up without agreeing to have them automatically bill your credit card every year). * Hides (makes it difficult to find) how to stop auto-renew: * You can't just stop auto-renew from your billing panel, the way you can with reputable businesses. * You have to hunt their website for a link (in extremely small font) to the page which contains instructions for cancelling. * When you get to that page, turns out it's the 5000+ word "Terms of Service" document, which you have to scour to find a phone number. Then, you have to call and get put on hold (or if you like, they will call you back three days later). Once you finally get through, you have to jump through a lot of security hoops. All of the above, just to cancel the service. Their product may or may not be OK, but be forewarned that with Sitelock, it's not easy to get out once you're in.

Read full review

Quotes from Members

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

Pros

"Fastly provides CDN, WAF, image optimization, and IP restriction."

"Fastly uses configuration versioning, where you can deploy a new version in less than one minute."

"Initially, we faced load time issues, but after deploying Fastly and optimizing our queries, we achieved a response time cut to less than 1 millisecond from an initial 3 to 4 seconds."

"The product's initial setup phase is straightforward."

"In summary, this solution is easy to manage, quick to deploy, and all of my customers are happy."

"Fastly combines both the CDN side and the Signal Sciences next-generation WAF, which is closely integrated with the CDN, allowing us to use both products seamlessly."

"Compute@Edge features are valuable to me."

"Fastly has positively impacted my organization by helping to obtain better solutions in less time and in a much more traceable way."

More Fastly pros

"It seems to provide a bit of useful information on website health."

"Not only did SiteLock's website scanner find the issue with my website, but with SiteLock I was able to implement a security system to prevent future breaches."

Cons

"It's not easy to start with Fastly if you don't have VCL knowledge, so it appears very complex at the beginning."

"Fastly can be improved in certain areas such as VCL, which is powerful but has a steep learning curve for normal users."

"Another downside of Fastly is that when we wanted to migrate our API domains, it's lacking the WebSocket protocol."

"I think Fastly could improve by improving the documentation and having some code examples so that it is easier for developers, since at the beginning it becomes a bit complicated."

"It is missing a "staging" platform to deploy a test configuration with all of the real settings, which would allow us to properly test before putting it into production."

"We are not getting quick responses from Fastly technical support engineers. Sometimes they depend on their D3 developers."

"Stronger analytics would be helpful, like showing configurations that haven't served a certain amount of traffic in a while. With many properties, things can get lost track of - duplicates or unused configurations not properly decommissioned."

"The product should provide improved bot detection and management."

More Fastly cons

"Sitelock may perform a useful service, but be wary of giving them your credit card information."

Pricing and Cost Advice

"The pricing has been very competitive."

"You need to pay a premium price for the tool."

"In my opinion, Fastly is priced competitively."

"I've generally found Fastly to be very competitive in pricing, especially around Compute@Edge."

"Fastly is less expensive than one of its competitors."

"The solution is cheaper than other products in the market."

"It is an expensive solution."

"You can't just stop auto-renew from your billing panel, the way you can with reputable businesses."

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Top Industries

By visitors reading reviews

Comms Service Provider

13%

Financial Services Firm

11%

Outsourcing Company

10%

Manufacturing Company

Construction Company

17%

Comms Service Provider

14%

Manufacturing Company

14%

Transportation Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	6
Large Enterprise	7

No data available

Questions from the Community

What is your experience regarding pricing and costs for Fastly?

In terms of price, I find it good, and as I mentioned, the implementation cost had some difficulty at the beginning due to the learning curve.

See all answers

What needs improvement with Fastly?

I think Fastly could improve by improving the documentation and having some code examples so that it is easier for developers, since at the beginning it becomes a bit complicated.

See all answers

What is your primary use case for Fastly?

My primary use case for Fastly is using it as a CDN to speed up my customers' access to the applications. A specific example of how Fastly has helped improve my customers' access to the application...

See all answers

What do you recommend for a securing Web Application?

That's one of the most critical questions any development team faces! Securing a web application requires a layered approach, not a single tool. Here is a quick breakdown of what to recommend: In...

See all answers

Comparisons

Cloudflare vs Fastly

Compared 19% of the time

Akamai vs Fastly

Compared 16% of the time

Imperva Application Security Platform vs Fastly

Compared 9% of the time

Uplynk vs Fastly

Compared 5% of the time

CDN77 vs Fastly

Compared 4% of the time

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Comodo cWatch vs SiteLock

Compared 12% of the time

Cloudflare vs SiteLock

Compared 12% of the time

Imperva Application Security Platform vs SiteLock

Compared 11% of the time

Sucuri vs SiteLock

Compared 7% of the time

Checkmarx One vs SiteLock

Compared 5% of the time

More SiteLock Competitors

Product Reports

Buyer's Guide

Fastly

September 2026

Download Fastly product report

Buyer's Guide

Distributed Denial-of-Service (DDoS) Protection

September 2026

Download SiteLock product report

Overview

Fastly is a leading provider of content delivery network services that enhances website performance through efficient caching and real-time architecture capabilities.

Fastly integrates CDN technology with advanced web application firewall for comprehensive security. Its global infrastructure supports performance enhancement, rapid deployment, and rollback capabilities. Utilizing the VCL language allows custom caching solutions. Compute@Edge provides extensive architectural flexibility, aiding in HTML manipulation and script execution. Users benefit from its stability and reliability features for seamless network protection, log management, image optimization, and A/B testing. Challenges include limited support in mainland China, inadequate WebSocket protocol implementation, and complex pricing structures.

What are the key features of Fastly?

CDN Integration: Delivers content quickly across global Points of Presence.
Signal Sciences’ WAF: Manages security threats effectively.
VCL Language: Offers customizable caching solutions.
Compute@Edge: Enables flexible architecture for HTML manipulation.
Image Optimization: Enhances performance with dynamic image delivery.

What benefits should users consider in reviews?

Performance Enhancement: Boosts website speed and response time.
Rapid Deployment: Allows for swift implementation and rollback.
Real-Time Visibility: Provides insights into cached content management.
Security and Stability: Ensures reliability against DDoS attacks and other threats.
Flexibility: Offers diverse network protection and infrastructure capabilities.

Fastly is widely implemented in industries needing robust content delivery and security capabilities. Companies use it as a reverse proxy for media delivery, ensuring availability and optimized performance. Its rapid deployment and rollback features are particularly beneficial in technology sectors requiring agile responses to demand shifts.

Fastly

SiteLock provides web security solutions focused on safeguarding websites against cyber threats and vulnerabilities. It offers businesses an effective way to protect their online presence, ensuring that their data and customers are secure.

SiteLock is a versatile web security platform designed to address the diverse security needs of businesses. It features continuous monitoring, malware protection, and advanced threat detection to fortify website defenses. Businesses can rely on SiteLock to protect against malicious attacks, ensuring data integrity and customer trust. Its easy integration with existing systems makes it a preferred choice for enhancing website security without disruption.

What are the key features of SiteLock?

Website Scanning: Detects vulnerabilities and malware threats regularly.
Malware Removal: Automated tools to remove harmful content quickly.
Firewall: Blocks malicious traffic to safeguard against DDoS attacks.
PCI Compliance: Helps meet industry security standards with ease.

What benefits should users expect from SiteLock?

Enhanced Security: Continuous monitoring for peace of mind.
Cost-Effective: Reduces expenses related to breach management.
Customer Trust: Protecting data enhances brand credibility.
Operational Efficiency: Seamless integration without workflow interruptions.

SiteLock is tailored for various industries, including retail, healthcare, and financial services. Retailers benefit from protecting payment processing systems, while healthcare providers ensure patient data security. Financial services use SiteLock for safeguarding sensitive information, making it an essential component of their data protection strategy.

SiteLock

Sample Customers

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

galaxyguitar.com, robertasinc.com, indiarunning.com, comprarenpr.com, idbasolutions.com, newgrip.com

Buyer's Guide

Fastly vs. SiteLock

September 2026

Free Report: Fastly vs. SiteLock

Find out what your peers are saying about Fastly vs. SiteLock and other solutions. Updated: September 2026.

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See our Fastly vs. SiteLock report.

See our list of best Distributed Denial-of-Service (DDoS) Protection vendors, best CDN vendors, and best Web Application Firewall (WAF) vendors.

We monitor all Distributed Denial-of-Service (DDoS) Protection reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.