Technology history for challengestodo.com

2025 5 added · 6 dropped

• added Cloudflare Browser Insights Nov 2025 · RUM
• added Snowplow Analytics Oct 2025 · Analytics
• dropped Zepto Jul 2025 · JavaScript libraries
• dropped Cloudflare Bot Management May 2025 · Security
• dropped Snowplow Analytics May 2025 · Analytics
• added Cloudflare Bot Management Mar 2025 · Security
• dropped core-js Mar 2025 · JavaScript libraries
• dropped HSTS Mar 2025 · Security
• dropped ID5 Mar 2025 · Advertising
• added Snowplow Analytics Mar 2025 · Analytics
• added reCAPTCHA Feb 2025 · Security

2024 3 added · 2 dropped

• added core-js Dec 2024 · JavaScript libraries
• added ID5 Dec 2024 · Advertising
• dropped core-js Oct 2024 · JavaScript libraries
• added core-js Aug 2024 · JavaScript libraries
• dropped core-js Mar 2024 · JavaScript libraries

2023 34 added · 20 dropped

• dropped Amazon Advertising Oct 2023 · Advertising
• dropped AppNexus Oct 2023 · Advertising
• dropped Cart Functionality Oct 2023 · Ecommerce
• dropped Cloudflare Bot Management Oct 2023 · Security
• dropped Criteo Oct 2023 · Advertising
• dropped Google Analytics Enhanced eCommerce Oct 2023 · Analytics
• dropped Google Publisher Tag Oct 2023 · Advertising
• dropped OpenX Oct 2023 · Advertising
• dropped PubMatic Oct 2023 · Advertising
• dropped reCAPTCHA Oct 2023 · Security
• dropped Rubicon Project Oct 2023 · Advertising
• dropped Smart Ad Server Oct 2023 · Advertising
• dropped Tapad Oct 2023 · Advertising
• added Priority Hints Sep 2023 · Performance
• added Amazon Advertising Aug 2023 · Advertising
• dropped Amazon ALB Aug 2023 · Load balancers
• dropped Amazon Web Services Aug 2023 · PaaS
• added AppNexus Aug 2023 · Advertising
• added Cart Functionality Aug 2023 · Ecommerce
• added Cloudflare Bot Management Aug 2023 · Security
• added core-js Aug 2023 · JavaScript libraries
• added Google Analytics Enhanced eCommerce Aug 2023 · Analytics
• added OpenX Aug 2023 · Advertising
• added Rubicon Project Aug 2023 · Advertising
• added Smart Ad Server Aug 2023 · Advertising
• added Tapad Aug 2023 · Advertising
• dropped OpenX Jul 2023 · Advertising
• added Google Publisher Tag Jun 2023 · Advertising
• added Amazon ALB May 2023 · Load balancers
• added Amazon Web Services May 2023 · PaaS
• dropped AppNexus May 2023 · Advertising
• added Cloudflare May 2023 · CDN
• added Criteo May 2023 · Advertising
• added Ezoic May 2023 · Advertising
• added GeneratePress May 2023 · WordPress themes
• added GeneratePress GP Premium May 2023 · WordPress plugins
• dropped Google Publisher Tag May 2023 · Advertising
• added HSTS May 2023 · Security
• added HTTP/3 May 2023 · Miscellaneous
• added Open Graph May 2023 · Miscellaneous
• added OpenX May 2023 · Advertising
• added PubMatic May 2023 · Advertising
• added Quantcast Measure May 2023 · Analytics
• added reCAPTCHA May 2023 · Security
• added web-vitals May 2023 · JavaScript libraries
• added Zepto May 2023 · JavaScript libraries
• added GeneratePress GP Premium Apr 2023 · WordPress plugins
• added OpenX Apr 2023 · Advertising
• added Amazon ALB Mar 2023 · Load balancers
• added Amazon Web Services Mar 2023 · PaaS
• dropped Cloudflare Bot Management Mar 2023 · Security
• dropped Adobe Audience Manager Feb 2023 · Segmentation
• added AppNexus Feb 2023 · Advertising
• added Cloudflare Bot Management Jan 2023 · Security

2022 21 added · 5 dropped · 2 switched

• dropped Cloudflare Network Error Logging Dec 2022 · Issue trackers
• dropped AppNexus Nov 2022 · Advertising
• added Criteo Sep 2022 · Advertising
• added HSTS Sep 2022 · Security
• added HTTP/3 Sep 2022 · Miscellaneous
• added Open Graph Sep 2022 · Miscellaneous
• added Cloudflare Aug 2022 · CDN
• added Cloudflare Network Error Logging Aug 2022 · Issue trackers
• dropped Criteo Aug 2022 · Advertising
• added Ezoic Aug 2022 · Advertising
• added GeneratePress Aug 2022 · WordPress themes
• added Google Publisher Tag Aug 2022 · Advertising
• added PubMatic Aug 2022 · Advertising
• added Quantcast Measure Aug 2022 · Analytics
• added reCAPTCHA Aug 2022 · Security
• added web-vitals Aug 2022 · JavaScript libraries
• added Zepto Aug 2022 · JavaScript libraries
• dropped GumGum Jul 2022 · Advertising
• dropped core-js May 2022 · JavaScript libraries
• added GumGum May 2022 · Advertising
• switched Google Remarketing Tag → Criteo Apr 2022 · Retargeting
• added reCAPTCHA Apr 2022 · Security
• added Cloudflare Feb 2022 · CDN
• added Cloudflare Network Error Logging Feb 2022 · Issue trackers
• switched Google Core Web Vitals → web-vitals Feb 2022 · RUM
• added AppNexus Jan 2022 · Advertising
• added core-js Jan 2022 · JavaScript libraries
• added PubMatic Jan 2022 · Advertising

2021 9 added · 10 dropped · 1 switched

• dropped Wheelio Dec 2021 · Widgets
• added GeneratePress Nov 2021 · WordPress themes
• added Google Core Web Vitals Sep 2021 · RUM
• dropped Quantcast Choice Sep 2021 · Cookie compliance
• added Wheelio Sep 2021 · Widgets
• added Google Remarketing Tag Jul 2021 · Retargeting
• added Quantcast Choice Jul 2021 · Cookie compliance
• added Zepto Jul 2021 · JavaScript libraries
• dropped AppNexus May 2021 · Advertising
• dropped Choices May 2021 · Miscellaneous
• added Ezoic May 2021 · Advertising
• dropped comScore Apr 2021 · Analytics
• dropped SiteGround Apr 2021 · PaaS
• dropped Criteo Mar 2021 · Advertising
• dropped DoubleClick Ad Exchange (AdX) Mar 2021 · Advertising
• dropped Quantcast Choice Mar 2021 · Cookie compliance
• added AppNexus Feb 2021 · Advertising
• switched Twitter Emoji (Twemoji) → Choices Feb 2021 · Miscellaneous
• added Google Publisher Tag Feb 2021 · Advertising
• dropped PubMatic Feb 2021 · Advertising

2020 6 added · 2 dropped

• added PubMatic Nov 2020 · Advertising
• added SiteGround Sep 2020 · PaaS
• added Twitter Emoji (Twemoji) Sep 2020 · Miscellaneous
• added Quantcast Choice Aug 2020 · Cookie compliance
• dropped Varnish Apr 2020 · Cache Tools
• added Criteo Mar 2020 · Advertising Networks
• added DoubleClick Ad Exchange (AdX) Mar 2020 · Advertising Networks
• dropped Cloudflare Jan 2020 · CDN

2019 13 added · 1 dropped · 1 switched

• added Nginx Dec 2019 · Reverse Proxy
• added Yoast SEO Dec 2019 · SEO
• dropped Twitter Emoji (Twemoji) Jun 2019 · Miscellaneous
• added Cloudflare Mar 2019 · CDN
• added Google AdSense Mar 2019 · Advertising Networks
• added Google Analytics Mar 2019 · Analytics
• switched Font Awesome → Google Font API Mar 2019 · Font Scripts
• added Google Tag Manager Mar 2019 · Tag Managers
• added jQuery Mar 2019 · JavaScript Libraries
• added jQuery Migrate Mar 2019 · JavaScript Libraries
• added MySQL Mar 2019 · Databases
• added PHP Mar 2019 · Programming Languages
• added React Mar 2019 · JavaScript Frameworks
• added Twitter Emoji (Twemoji) Mar 2019 · Miscellaneous
• added WordPress Mar 2019 · CMS